Intermittent SIGTRAP (Trace/BPT trap: 5) and empty output from lpass show on macOS Tahoe 26.2 (Apple Silicon)

[aclevername]

Environment
• OS: macOS Tahoe 26.2
• Hardware: MacBook Pro, M1 Pro (arm64)
• lpass install method: Homebrew (path: /opt/homebrew/bin/lpass)
• Shell: zsh
• lastpass-cli version: LastPass CLI v1.6.1.GIT
• Homebrew version:Homebrew 5.0.11

lpass show intermittently fails in two ways:
1. Crashes with Trace/BPT trap: 5 (SIGTRAP).
2. Exits successfully but prints no output, even though the secret exists and is readable.

This makes automation flaky and breaks scripts that fetch secrets from LastPass.

I'm also observing the malloc issue #727

[trinitronx]

Seeing the same on macOS Tahoe 26.3 (25D125) with lastpass-cli v1.6.1.GIT from Homebrew. This is a showstopper bug, which completely prevents using lpass CLI.

$ lpass --version
LastPass CLI v1.6.1.GIT

$ lpass login exampleuser@example.com
[1]    1706 trace trap  lpass login exampleuser@example.com

$ lpass status
Not logged in.

Edit

As it turns out, I was able to follow the rebuild procedure here.

Expand for rebuild output (HOMEBREW_NO_INSTALL_FROM_API=1 brew reinstall --build-from-source lastpass-cli)

$ HOMEBREW_NO_INSTALL_FROM_API=1 brew reinstall --build-from-source lastpass-cli

==> Tapping homebrew/core
Cloning into '/opt/homebrew/Library/Taps/homebrew/homebrew-core'...
remote: Enumerating objects: 3245277, done.
remote: Counting objects: 100% (676/676), done.
remote: Compressing objects: 100% (174/174), done.
remote: Total 3245277 (delta 603), reused 509 (delta 502), pack-reused 3244601 (from 5)
Receiving objects: 100% (3245277/3245277), 1.04 GiB | 736.00 KiB/s, done.
Resolving deltas: 100% (2493054/2493054), done.
Tapped 5 commands and 8214 formulae (8,750 files, 1.3GB).
Warning: building from source is not supported!
You're on your own. Failures are expected so don't create any issues, please!
==> Fetching downloads for: lastpass-cli
✔︎ Bottle Manifest docbook (5.2_1)                                                                                                                                                                                                                                                                Downloaded    2.6KB/  2.6KB
✔︎ Bottle Manifest sqlite (3.51.2_1)                                                                                                                                                                                                                                                              Downloaded   11.5KB/ 11.5KB
✔︎ Bottle sqlite (3.51.2_1)                                                                                                                                                                                                                                                                       Downloaded    2.4MB/  2.4MB
✔︎ Bottle Manifest zstd (1.5.7_1)                                                                                                                                                                                                                                                                 Downloaded   13.2KB/ 13.2KB
✔︎ Bottle zstd (1.5.7_1)                                                                                                                                                                                                                                                                          Downloaded  793.6KB/793.6KB
✔︎ Bottle Manifest python@3.14 (3.14.3_1)                                                                                                                                                                                                                                                         Downloaded   29.5KB/ 29.5KB
✔︎ Bottle Manifest boost (1.90.0_1)                                                                                                                                                                                                                                                               Downloaded   28.9KB/ 28.9KB
✔︎ Bottle Manifest source-highlight (3.1.9_6)                                                                                                                                                                                                                                                     Downloaded   16.6KB/ 16.6KB
✔︎ Bottle Manifest asciidoc (10.2.1_1)                                                                                                                                                                                                                                                            Downloaded    5.3KB/  5.3KB
✔︎ Bottle asciidoc (10.2.1_1)                                                                                                                                                                                                                                                                     Downloaded  228.8KB/228.8KB
✔︎ Bottle Manifest cmake (4.2.3)                                                                                                                                                                                                                                                                  Downloaded   11.4KB/ 11.4KB
✔︎ Bottle Manifest docbook-xsl (1.79.2_1)                                                                                                                                                                                                                                                         Downloaded    2.1KB/  2.1KB
✔︎ Bottle Manifest libssh2 (1.11.1_1)                                                                                                                                                                                                                                                             Downloaded   12.1KB/ 12.1KB
✔︎ Bottle libssh2 (1.11.1_1)                                                                                                                                                                                                                                                                      Downloaded  422.9KB/422.9KB
✔︎ Bottle Manifest curl (8.18.0_2)                                                                                                                                                                                                                                                                Downloaded   20.2KB/ 20.2KB
✔︎ Bottle curl (8.18.0_2)                                                                                                                                                                                                                                                                         Downloaded    1.6MB/  1.6MB
✔︎ Bottle Manifest libgpg-error (1.59)                                                                                                                                                                                                                                                            Downloaded    9.3KB/  9.3KB
✔︎ Bottle libgpg-error (1.59)                                                                                                                                                                                                                                                                     Downloaded  578.0KB/578.0KB
✔︎ Patch 31a4ad5f735933ff8e96403103d5b4f61faee945.patch?full_index=1                                                                                                                                                                                                                              Verified    979.0 B/979.0 B
✔︎ Patch 95fff9accc5832264e31af3f54f49af461339693.patch?full_index=1                                                                                                                                                                                                                              Verified    825.0 B/825.0 B
✔︎ Formula lastpass-cli (1.6.1)                                                                                                                                                                                                                                                                   Verified    125.9KB/125.9KB
✔︎ Bottle source-highlight (3.1.9_6)                                                                                                                                                                                                                                                              Downloaded    2.1MB/  2.1MB
✔︎ Bottle docbook (5.2_1)                                                                                                                                                                                                                                                                         Downloaded    2.9MB/  2.9MB
✔︎ Bottle python@3.14 (3.14.3_1)                                                                                                                                                                                                                                                                  Downloaded   19.1MB/ 19.1MB
✔︎ Bottle cmake (4.2.3)                                                                                                                                                                                                                                                                           Downloaded   18.7MB/ 18.7MB
✔︎ Bottle docbook-xsl (1.79.2_1)                                                                                                                                                                                                                                                                  Downloaded   48.5MB/ 48.5MB
✔︎ Bottle boost (1.90.0_1)                                                                                                                                                                                                                                                                        Downloaded   61.3MB/ 61.3MB
==> Reinstalling lastpass-cli
==> Installing dependencies for lastpass-cli: docbook, sqlite, zstd, python@3.14, boost, source-highlight, asciidoc, cmake, docbook-xsl, libssh2, curl and libgpg-error
==> Installing lastpass-cli dependency: docbook
==> Pouring docbook--5.2_1.all.bottle.tar.gz
==> /usr/bin/xmlcatalog --noout --create /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/4.2/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/4.2/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/4.1.2/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/4.1.2/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/4.3/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/4.3/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/4.4/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/4.4/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/4.5/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/4.5/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/5.0/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/5.0/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/5.1/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/5.1/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --del file:///opt/homebrew/opt/docbook/docbook/xml/5.2/catalog.xml /opt/homebrew/etc/xml/catalog
==> /usr/bin/xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook/docbook/xml/5.2/catalog.xml /opt/homebrew/etc/xml/catalog
🍺  /opt/homebrew/Cellar/docbook/5.2_1: 258 files, 17.4MB
==> Installing lastpass-cli dependency: sqlite
==> Pouring sqlite--3.51.2_1.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/sqlite/3.51.2_1: 13 files, 5.2MB
==> Installing lastpass-cli dependency: zstd
==> Pouring zstd--1.5.7_1.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/zstd/1.5.7_1: 32 files, 2.3MB
==> Installing lastpass-cli dependency: python@3.14
==> Pouring python@3.14--3.14.3_1.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/python@3.14/3.14.3_1: 3,764 files, 75.3MB
==> Installing lastpass-cli dependency: boost
==> Pouring boost--1.90.0_1.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/boost/1.90.0_1: 16,255 files, 356.5MB
==> Installing lastpass-cli dependency: source-highlight
==> Pouring source-highlight--3.1.9_6.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/source-highlight/3.1.9_6: 427 files, 8.9MB
==> Installing lastpass-cli dependency: asciidoc
==> Pouring asciidoc--10.2.1_1.all.bottle.tar.gz
🍺  /opt/homebrew/Cellar/asciidoc/10.2.1_1: 132 files, 896.3KB
==> Installing lastpass-cli dependency: cmake
==> Pouring cmake--4.2.3.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/cmake/4.2.3: 4,016 files, 63.3MB
==> Installing lastpass-cli dependency: docbook-xsl
==> Pouring docbook-xsl--1.79.2_1.all.bottle.1.tar.gz
==> xmlcatalog --noout --del file:///opt/homebrew/opt/docbook-xsl/docbook-xsl/catalog.xml /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook-xsl/docbook-xsl/catalog.xml /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del https://cdn.docbook.org/release/xsl-nons/1.79.2 /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem https://cdn.docbook.org/release/xsl-nons/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI https://cdn.docbook.org/release/xsl-nons/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del https://cdn.docbook.org/release/xsl-nons/current /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem https://cdn.docbook.org/release/xsl-nons/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI https://cdn.docbook.org/release/xsl-nons/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del http://docbook.sourceforge.net/release/xsl/1.79.2 /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem http://docbook.sourceforge.net/release/xsl/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI http://docbook.sourceforge.net/release/xsl/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del http://docbook.sourceforge.net/release/xsl/current /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem http://docbook.sourceforge.net/release/xsl/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI http://docbook.sourceforge.net/release/xsl/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns/catalog.xml /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add nextCatalog  file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns/catalog.xml /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del https://cdn.docbook.org/release/xsl/1.79.2 /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem https://cdn.docbook.org/release/xsl/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI https://cdn.docbook.org/release/xsl/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del https://cdn.docbook.org/release/xsl/current /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem https://cdn.docbook.org/release/xsl/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI https://cdn.docbook.org/release/xsl/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del http://docbook.sourceforge.net/release/xsl-ns/1.79.2 /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem http://docbook.sourceforge.net/release/xsl-ns/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI http://docbook.sourceforge.net/release/xsl-ns/1.79.2 file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --del http://docbook.sourceforge.net/release/xsl-ns/current /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteSystem http://docbook.sourceforge.net/release/xsl-ns/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
==> xmlcatalog --noout --add rewriteURI http://docbook.sourceforge.net/release/xsl-ns/current file:///opt/homebrew/opt/docbook-xsl/docbook-xsl-ns /opt/homebrew/etc/xml/catalog
🍺  /opt/homebrew/Cellar/docbook-xsl/1.79.2_1: 4,911 files, 98.5MB
==> Installing lastpass-cli dependency: libssh2
==> Pouring libssh2--1.11.1_1.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/libssh2/1.11.1_1: 201 files, 1.3MB
==> Installing lastpass-cli dependency: curl
==> Pouring curl--8.18.0_2.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/curl/8.18.0_2: 551 files, 4.7MB
==> Installing lastpass-cli dependency: libgpg-error
==> Pouring libgpg-error--1.59.arm64_tahoe.bottle.tar.gz
🍺  /opt/homebrew/Cellar/libgpg-error/1.59: 50 files, 1.9MB
==> Installing lastpass-cli
==> Patching
==> Applying 31a4ad5f735933ff8e96403103d5b4f61faee945.patch
==> Applying 95fff9accc5832264e31af3f54f49af461339693.patch
==> cmake -S . -B build -DCMAKE_INSTALL_MANDIR=/opt/homebrew/Cellar/lastpass-cli/1.6.1_3/share/man
==> cmake --build build --target install --target install-doc
🍺  /opt/homebrew/Cellar/lastpass-cli/1.6.1_3: 12 files, 279.7KB, built in 7 seconds
==> Running `brew cleanup lastpass-cli`...
Disable this behaviour by setting `HOMEBREW_NO_INSTALL_CLEANUP=1`.
Hide these hints with `HOMEBREW_NO_ENV_HINTS=1` (see `man brew`).
Removing: /Users/exampleuser/Library/Caches/Homebrew/lastpass-cli--1.6.1.tar.gz... (125.9KB)
Removing: /Users/exampleuser/Library/Caches/Homebrew/lastpass-cli--1.6.1_2... (94.3KB)
Removing: /Users/exampleuser/Library/Caches/Homebrew/lastpass-cli--patch--5d7559511b1814c6f9d8cccc02b7c5dbf8a4e6d2927a94cf76d090cc45a47dd2.patch... (825B)
Removing: /Users/exampleuser/Library/Caches/Homebrew/lastpass-cli--patch--a4c2a16fd47942a511c0ebbce08bee5ffdb0d6141f6c9b60ce397db9e207d8be.patch... (979B)
==> Caveats
zsh completions have been installed to:
  /opt/homebrew/share/zsh/site-functions

Afterwards, the SIGTRAP crash stopped, and the utility works again.

Expand for lpass login results after the rebuild

$ lpass --version
LastPass CLI v1.6.1.GIT

$ lpass status
Not logged in.

$ lpass login exampleuser@example.com
Success: Logged in as exampleuser@example.com.

$ lpass status
Logged in as exampleuser@example.com.

So, it seems that this could be due to a Homebrew packaging or build issue.