High severity7.5NVD Advisory· Published Apr 28, 2026· Updated Apr 30, 2026
CVE-2026-41399
CVE-2026-41399
Description
OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.3.28 | 2026.3.28 |
Affected products
2Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-f44p-c7w9-7xr7ghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7nvdVendor AdvisoryPatchWEB
- www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-pre-auth-websocket-upgradesnvdThird Party Advisory
- github.com/openclaw/openclaw/commit/cb5f7e201f3f86ad70e199ef850e636b4cc457baghsaWEB
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