Cockpit: cockpit: denial of service via unbounded fragmented websocket messages
Historical advisory recorded 12 Nov 2026 14:16:18 UTC. Read the latest advisory.
cve-program · CVE-2026-91150
PublishedA flaw was found in Cockpit. This vulnerability allows a remote attacker, without prior authentication, to send specially crafted fragmented WebSocket messages. These messages accumulate without a total-size limit, leading to unbounded memory exhaustion and a denial of service in the `cockpit-ws` service.
Read the publisher's advisoryAffected versions, risk and source history
cve-program · CVE-2026-91150
PublishedCockpit: cockpit: denial of service via unbounded fragmented websocket messages
A flaw was found in Cockpit. This vulnerability allows a remote attacker, without prior authentication, to send specially crafted fragmented WebSocket messages. These messages accumulate without a total-size limit, leading to unbounded memory exhaustion and a denial of service in the `cockpit-ws` service.
- Source published
- 11 Nov 2026 18:38:12 UTC
- Source modified
- 12 Nov 2026 12:53:25 UTC
- Saved here
- 12 Nov 2026 14:16:18 UTC
- Source terms
- CVE Program Terms of Use
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Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H