CVE detail
CVE-2026-15565
A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket handshake.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 13.9 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 3
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
3 source links · newest first
- https://access.redhat.com/errata/RHSA-2026:53806access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 11, 2026, 9:17 AM - https://bugzilla.redhat.com/show_bug.cgi?id=2490628bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comAug 11, 2026, 9:17 AM - https://access.redhat.com/security/cve/CVE-2026-15565access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 11, 2026, 9:17 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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