| Component | OpenClaw |
| Severity | high (CVSS 7.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Published (NVD) | 2026-03-19 |
| Last modified | 2026-06-17 |
| Affected versions | openclaw < 2026.3.1 |
| Fixed in | 2026.3.1 |
| Weakness | CWE-770 |
| CISA KEV | not listed |
NVD description
OpenClaw versions prior to 2026.3.1 contain an unbounded memory growth vulnerability in the Zalo webhook endpoint that allows unauthenticated attackers to trigger in-memory key accumulation by varying query strings. Remote attackers can exploit this by sending repeated requests with different query parameters to cause memory pressure, process instability, or out-of-memory conditions that degrade service availability.
What to do
- Upgrade OpenClaw to
2026.3.1or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-28461
- https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xh
- https://www.vulncheck.com/advisories/openclaw-unbounded-memory-growth-in-zalo-webhook-via-query-string-key-churn
Read more
Other OpenClaw CVEs
Nexting pinclaw OpenClaw channel plugin through 0.3.0 contains a missing authentication vulnerability in src/core/http-router.ts that skips...
OpenClaw Windows Node before 2026.7.1 contains an incomplete environment-variable sanitizer in system.run that fails to block GIT_CONFIG_*,...
OpenClaw Windows Node before 2026.7.1 contains an incorrect authorization vulnerability in the system.run exec-approval policy where ExecShe...
OpenClaw Windows Node before 2026.7.1 contains an allocation of resources without limits vulnerability in the gateway WebSocket transport th...
OpenClaw Windows Node through 2026.9.4 contains a server-side request forgery vulnerability in the canvas.present capability that bypasses U...
OpenClaw Windows Node before 2026.7.1 contains an incomplete validation vulnerability in system.execApprovals.set that accepts wildcard-exec...