CVE tracker
CVE-2026-119574
CVE-2026-119574High 8.2
Research and translation in progress – available shortly.
Original description (NVD)
Traefik from 3.2.0 before 3.7.15 contains a data race in the experimental FastProxy that allows unauthenticated attackers to crash the process by abusing HTTP/1 protocol upgrades. Attackers can repeatedly open and abort upgraded connections such as WebSocket, corrupting the unsynchronized shared bufio.Reader and triggering an unrecovered panic that terminates Traefik.
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Data: NVD (NIST), CISA KEV, FIRST EPSS – updated continuously.