CVE-2026-41344

OpenClaw < 2026.3.28 - Privilege Escalation via chat.send /verbose Parameter

State: Published
Severity: 5.3 Medium
Published: Apr 23, 2026
Updated: Apr 24, 2026
Reserved: Apr 20, 2026

Description

OpenClaw before 2026.3.28 contains a privilege escalation vulnerability in the chat.send endpoint that allows write-scoped gateway callers to persist admin-only verboseLevel session overrides. Attackers can exploit the /verbose parameter to bypass access controls and expose sensitive reasoning or tool output intended to be restricted to administrators.

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:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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-5h2w-qmfp-ggp6)vendor-advisory
VulnCheck Advisory: OpenClaw < 2026.3.28 - Privilege Escalation via chat.send /verbose Parameterthird-party-advisory

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