OpenClaw: Google Chat and Zalouser group sender allowlist bypass via policy downgrade
## Summary When only a route-level group allowlist was configured, sender policy resolution silently downgraded from `allowlist` to `open` instead of preserving the configured group policy. ## Impact Any member of an allowlisted Google Chat space or Zalouser group could interact with the bot even when the operator intended sender-level restrictions. ## Affected Component `extensions/googlechat/src/monitor-access.ts, extensions/zalouser/src/monitor.ts` ## Fixed Versions - Affected: `<= 2026.3.24` - Patched: `>= 2026.3.28` - Latest stable `2026.3.28` contains the fix. ## Fix Fixed by commit `e64a881ae0` (`Channels: preserve routed group policy`). OpenClaw thanks @AntAISecurityLab for reporting.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-33578US | medium4.3OT elevated | — | ||
OpenClaw before 2026.3.28 contains a sender policy bypass vulnerability in the Google Chat and Zalouser extensions where route-level group allowlist policies silently downgrade to… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclawPACKAGE
- https://github.com/openclaw/openclaw/commit/e64a881ae0fb8af18e451163f4c2d611d60cc8e4WEB
- https://github.com/openclaw/openclaw/security/advisories/GHSA-63mg-xp9j-jfcmWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-33578ADVISORY
- https://www.vulncheck.com/advisories/openclaw-sender-policy-allowlist-bypass-via-policy-downgrade-in-google-chat-and-zalouser-extensionsWEB
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