### Summary Slack allowFrom could bind to mutable display names. In affected versions, a Slack account able to change display name metadata could match a policy entry through mutable display metadata. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's...
Full CISO analysis pending enrichment.
What systems are affected?
| Package | Ecosystem | Vulnerable Range | Patched |
|---|---|---|---|
| OpenClaw | npm | <= 2026.5.3-1 | 2026.5.3 |
Do you use OpenClaw? You're affected.
How severe is it?
What should I do?
Patch available
Update OpenClaw to version 2026.5.3
Which compliance frameworks are affected?
Compliance analysis pending. Sign in for full compliance mapping when available.
Frequently Asked Questions
What is GHSA-c29c-2q9c-pc86?
### Summary Slack allowFrom could bind to mutable display names. In affected versions, a Slack account able to change display name metadata could match a policy entry through mutable display metadata. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could receive agent access intended for another Slack identity. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.5.3`. ### Mitigations use stable Slack user IDs in allowlists until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.
Is GHSA-c29c-2q9c-pc86 actively exploited?
No confirmed active exploitation of GHSA-c29c-2q9c-pc86 has been reported, but organizations should still patch proactively.
How to fix GHSA-c29c-2q9c-pc86?
Update to patched version: OpenClaw 2026.5.3.
What is the CVSS score for GHSA-c29c-2q9c-pc86?
No CVSS score has been assigned yet.
What are the technical details?
Original Advisory
### Summary Slack allowFrom could bind to mutable display names. In affected versions, a Slack account able to change display name metadata could match a policy entry through mutable display metadata. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could receive agent access intended for another Slack identity. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.5.3`. ### Mitigations use stable Slack user IDs in allowlists until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.
Weaknesses (CWE)
CWE-290 — Authentication Bypass by Spoofing: This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
Source: MITRE CWE corpus.
References
Timeline
Related Vulnerabilities
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