CVE-2026-42421

MEDIUM 5.4

OpenClaw < 2026.4.8 - WebSocket Session Persistence via Shared Gateway Token Rotation

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-613
Vendor	openclaw
Product	openclaw
Published	Apr 28, 2026

Stay Ahead of the Next One

Get instant alerts for openclaw openclaw

Be the first to know when new medium vulnerabilities affecting openclaw openclaw are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

OpenClaw / OpenClaw

0 < 2026.4.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-5h3f-885m-v22w github.com: https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-websocket-session-persistence-via-shared-gateway-token-rotation

Credits

🔍 KEXNA (@kexinoh)