GHSA-gfmx-pph7-g46x Impact Lower-trust background runtime output is injected into trusted `System:` events, and local async exec completion misses the intend

Q: Which versions are affected by GHSA-gfmx-pph7-g46x?

2 open source packages ship an affected version, including openclaw.

Q: Is GHSA-gfmx-pph7-g46x being exploited?

There is no known exploitation of GHSA-gfmx-pph7-g46x in the wild and no public exploit code.

Q: How do I fix GHSA-gfmx-pph7-g46x?

Upgrade openclaw to 2026.4.8 or later.

Not scored Published 9 Apr 2026

Attackers can inject malicious prompts into trusted system events via lower-trust background output, potentially compromising agent execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is GHSA-gfmx-pph7-g46x?

GHSA-gfmx-pph7-g46x is a code injection vulnerability in openclaw, published on 9 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Impact

Lower-trust background runtime output is injected into trusted System: events, and local async exec completion misses the intended exec-event downgrade.

Lower-trust runtime/background output could be promoted into trusted System events, allowing prompt-injection into later agent turns.

OpenClaw is a user-controlled local assistant. This advisory is scoped to the OpenClaw trust model and does not assume a multi-tenant service boundary.

Affected Packages / Versions

Package: openclaw (npm)
Affected versions: <= 2026.4.2
Patched versions: 2026.4.8

Fix

The issue was fixed on main and is available in the patched npm version listed above. The verified fixed tree is commit d7c3210cd6f5fdfdc1beff4c9541673e814354d5.

Verification

The fix was re-checked against main before publication, including targeted regression tests for the affected security boundary.

Credits

Thanks @tdjackey for reporting.

Which versions are affected by GHSA-gfmx-pph7-g46x?