https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T10:24:41.149294+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-22217 CVE-2026-22217 — OpenClaw 2026.2.22 < 2026.2.23 - Arbitrary Binary Execution via $SHELL Environment Variable Trusted Prefix Fallback 2026-09-28T10:24:41.152059+00:00

Affected: OpenClaw

OpenClaw version 2026.2.22 prior to 2026.2.23 contains an arbitrary code execution vulnerability in shell-env that allows attackers to execute attacker-controlled binaries by exploiting trusted-prefix fallback logic for the $SHELL variable. An attacker can influence the $SHELL environment variable on systems with writable trusted-prefix directories such as /opt/homebrew/bin to execute arbitrary binaries in the OpenClaw process context.

 https://vulnerability.circl.lu/vuln/ghsa-p4wh-cr8m-gm6c GHSA-p4wh-cr8m-gm6c — OpenClaw: shell-env trusted-prefix fallback allowed attacker-controlled binary execution via $SHELL 2026-09-28T10:24:41.152174+00:00

Affected: npm: openclaw

### Summary `shell-env` fallback trusted prefix-based executable paths for `$SHELL`, allowing execution of attacker-controlled binaries in local/runtime-env influence scenarios.

### Details In affected versions, shell selection accepted either: 1. a shell listed in `/etc/shells`, or 2. any executable under hardcoded trusted prefixes (`/bin`, `/usr/bin`, `/usr/local/bin`, `/opt/homebrew/bin`, `/run/current-system/sw/bin`).

The selected shell was then executed as a login shell (`-l -c 'env -0'`) for PATH/environment probing.

On systems where a trusted-prefix directory is writable (for example common Homebrew layouts under `/opt/homebrew/bin`) and runtime `$SHELL` can be influenced, this enabled attacker-controlled binary execution in OpenClaw process context.

The fix removes the trusted-prefix executable fallback and now trusts only shells explicitly registered in `/etc/shells`; otherwise it falls back to `/bin/sh`.

### Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `>= 2026.2.22, <= 2026.2.22-2` - Latest published vulnerable version: `2026.2.22-2` - Patched versions (released): `>= 2026.2.23`

### Fix Commit(s) - `ff10fe8b91670044a6bb0cd85deb736a0ec8fb55`

### Release Process Note This advisory sets `patched_versions` to the released version (`2026.2.23`). This advisory now reflects released fix version `2026.2.23`.

OpenClaw thanks @tdjackey for reporting.