# CVE-2026-42421

> Vulnerability · severity: **MEDIUM** (CVSS 5.4).

## 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.

## Key facts

- **CVE ID:** CVE-2026-42421
- **Published:** 2026-04-28
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.4
- **CWE codes:** CWE-613

## Affected products

- `openclaw:openclaw`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42421

## Citation

> AI Analytics. CVE-2026-42421. Retrieved 2026-08-02 from https://api.ai-analytics.org/cve/CVE-2026-42421. Derived from NIST NVD. Licensed CC0.

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