CVE-2026-33578

OpenClaw < 2026.3.28 - Sender Policy Allowlist Bypass via Policy Downgrade in Google Chat and Zalouser Extensions

State: Published
Severity: 5.3 Medium
Published: Mar 31, 2026
Updated: Sep 24, 2026
Reserved: Mar 23, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	VulnCheck

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.3.28Affected 2026.3.28Not affected

References

GitHub Security Advisory (GHSA-63mg-xp9j-jfcm)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: OpenClaw < 2026.3.28 - Sender Policy Allowlist Bypass via Policy Downgrade in Google Chat and Zalouser Extensionsthird-party-advisory

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