CVE-2026-41406

Description

OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.

CVSS v3.1 Score

5.4

MEDIUM

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

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
openclaw	openclaw	< 2026.3.31

References

Advisories & Patches

https://github.com/openclaw/openclaw/commit/f45e5a6569aab1d58cc6de25b19f1dc4c8779b85 https://github.com/openclaw/openclaw/security/advisories/GHSA-877v-w3f5-3pcq

Other References

https://www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-via-thread-history-and-quoted-messages

Frequently Asked Questions

What is CVE-2026-41406? +

OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-41406? +

CVE-2026-41406 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41406? +

CVE-2026-41406 affects products from openclaw, specifically: openclaw. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41406? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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