| Component | OpenClaw |
| Severity | low (CVSS 3.7) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Published (NVD) | 2026-06-12 |
| Last modified | 2026-07-23 |
| Affected versions | openclaw < 2026.5.6 |
| Fixed in | 2026.5.6 |
| Weakness | CWE-636 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade OpenClaw to
2026.5.6or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-53837
- https://github.com/openclaw/openclaw/security/advisories/GHSA-gp79-m99v-gjmh
- https://www.vulncheck.com/advisories/openclaw-missing-channel-type-validation-in-mattermost-event-handlers
Read more
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