CVE-2026-33578 | THREATINT

Description

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 open policy. Attackers can exploit this policy resolution flaw to bypass sender restrictions and interact with bots despite configured allowlist restrictions.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-31 | Updated 2026-04-02 | Assigner VulnCheck

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-863 Incorrect Authorization

Product status

Default status

unaffected

Any version before 2026.3.28

affected

2026.3.28 (semver)

unaffected

Credits

AntAISecurityLab reporter

References

github.com/...enclaw/security/advisories/GHSA-63mg-xp9j-jfcm (GitHub Security Advisory (GHSA-63mg-xp9j-jfcm)) third-party-advisory

github.com/...ommit/e64a881ae0fb8af18e451163f4c2d611d60cc8e4 (Patch Commit) patch

www.vulncheck.com/...-in-google-chat-and-zalouser-extensions (VulnCheck Advisory: OpenClaw < 2026.3.28 - Sender Policy Allowlist Bypass via Policy Downgrade in Google Chat and Zalouser Extensions) third-party-advisory

cve.org (CVE-2026-33578)

nvd.nist.gov (CVE-2026-33578)

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