Quick answers
- Is CVE-2026-91150 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91150 being exploited in the wild.
- How severe is CVE-2026-91150?
- High severity, with a CVSS score of 7.5, published 11 November 2026.
- Which products and versions are affected?
- Cockpit Project Cockpit.
- Is there a fix for CVE-2026-91150?
- Yes: fixed in Cockpit 372. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- Am I affected by CVE-2026-91150?
- Check whether you run Cockpit Project Cockpit. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: Cockpit 372
Technical details
An unbounded resource allocation vulnerability (CWE-770) in cockpit-ws fails to enforce total-size limits on fragmented WebSocket messages, allowing an unauthenticated remote attacker to trigger denial of service through memory exhaustion. The vulnerability requires network access but no authentication or user interaction, and results in process memory exhaustion rather than code execution. A fix exists in Cockpit 372 and later.
Affected products
- Cockpit Project Cockpit
Timeline
- 2026-11-11: disclosed