CVE-2026-53837 — LOW (3.7) — White Hats Nepal

Q: How severe is CVE-2026-53837?

CVE-2026-53837 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-53837?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.

Vulnerability Description

OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions by sending crafted Mattermost events missing channel type information to process restricted content.

CVSS Score

3.7

LOW

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Openclaw	Openclaw	< 2026.5.6

Related Weaknesses (CWE)

CWE-636

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-gp79-m99v-gjmhMitigationVendor Advisory
https://www.vulncheck.com/advisories/openclaw-missing-channel-type-validation-inThird Party Advisory

FAQ

What is CVE-2026-53837?

CVE-2026-53837 is a vulnerability with a CVSS score of 3.7 (LOW). OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions ...

How severe is CVE-2026-53837?

CVE-2026-53837 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-53837?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.