Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openclaw | Openclaw | < 2026.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xhMitigationVendor Advisory
- https://www.vulncheck.com/advisories/openclaw-unbounded-memory-growth-in-zalo-weThird Party Advisory
FAQ
What is CVE-2026-28461?
CVE-2026-28461 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-28461?
CVE-2026-28461 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28461?
Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.