CVE-2026-41376: OpenClaw < 2026.3.31 - Matrix Thread Context Allowlist Bypass via Sender Validation

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-28 · updated 2026-06-17
Weakness: CWE-346

Description

OpenClaw before 2026.3.31 contains an allowlist bypass vulnerability in Matrix thread root and reply context handling that fails to properly validate message senders. Attackers can fetch thread-root and reply context messages that should be filtered by sender allowlists, bypassing access controls.

Affected products

OpenClaw: before 2026.3.31 — fixed in 2026.3.31

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.31. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/8a563d603b70ef6338915f0527bee87282c3bad5
https://github.com/openclaw/openclaw/security/advisories/GHSA-rg8m-3943-vm6q
https://www.vulncheck.com/advisories/openclaw-matrix-thread-context-allowlist-bypass-via-sender-validation

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