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Description

OpenClaw before 2026.4.8 contains a session management vulnerability where existing WebSocket sessions survive shared gateway token rotation. Attackers can maintain unauthorized access to WebSocket connections after token rotation by exploiting the failure to disconnect existing shared-token sessions.

PUBLISHED Reserved 2026-04-27 | Published 2026-04-28 | Updated 2026-04-29 | Assigner VulnCheck




LOW: 2.3CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-613: Insufficient Session Expiration

Product status

Default status
unaffected

Any version before 2026.4.8
affected

2026.4.8 (semver)
unaffected

Credits

KEXNA (@kexinoh) reporter

References

github.com/...enclaw/security/advisories/GHSA-5h3f-885m-v22w (GitHub Security Advisory (GHSA-5h3f-885m-v22w)) vendor-advisory

github.com/...ommit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 (Patch Commit) patch

www.vulncheck.com/...tence-via-shared-gateway-token-rotation (VulnCheck Advisory: OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shared Gateway Token Rotation) third-party-advisory

cve.org (CVE-2026-42421)

nvd.nist.gov (CVE-2026-42421)

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