CVE detail
CVE-2026-26999
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.38 and 3.6.9, there is a potential vulnerability in Traefik managing TLS handshake on TCP routers. When Traefik processes a TLS connection on a TCP router, the read deadline used to bound protocol sniffing is cleared before the TLS handshake is completed. When a TLS handshake read error occurs, the code attempts a second handshake with different connection parameters, silently ignoring the initial error. A remote unauthenticated client can exploit this by sending an incomplete TLS record and stopping further data transmission, causing the TLS handshake to stall indefinitely and holding connections open. By opening many such stalled connections in parallel, an attacker can exhaust file descriptors and goroutines, degrading availability of all services on the affected entrypoint. This issue has been patched in versions 2.11.38 and 3.6.9.
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 20.8 · diversity 13.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
7 source links · newest first
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26999.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMar 5, 2026, 7:16 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2444874bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMar 5, 2026, 7:16 PM - https://access.redhat.com/security/cve/CVE-2026-26999access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 5, 2026, 7:16 PM - https://access.redhat.com/errata/RHSA-2026:10175access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 5, 2026, 7:16 PM No excerpt available.
Exploitgithub.comMar 5, 2026, 7:16 PMNo excerpt available.
Exploitgithub.comMar 5, 2026, 7:16 PMNo excerpt available.
Exploitgithub.comMar 5, 2026, 7:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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