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Version: v1.4.x

CVE-2026-88008

CVE Details​

Visit the official vulnerability details page for CVE-2026-88008 to learn more.

Initial Publication​

09/10/2026

Last Update​

09/14/2026

Third Party Dependency​

github.com/traefik/traefik/v3

NIST CVE Summary​

Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching Protocols, Traefik enters a raw tunnel and no longer applies routers, BasicAuth, ForwardAuth, IPAllowList, RateLimit, access logging, metrics, or tracing to later HTTP/2 requests, allowing an unauthenticated request through an unprotected route to reach protected paths on the same backend. This issue is fixed in 2.11.57 and 3.7.13.

CVE Severity​

9.1

Our Official Summary​

Investigation is ongoing to determine how this vulnerability affects our products.

Status​

Analyzed

Affected Products & Versions​

VersionPaletteAIPaletteAI VerteX
1.4.0⚠️ Impacted⚠️ Impacted
1.3.2⚠️ Impacted⚠️ Impacted
1.2.2⚠️ Impacted⚠️ Impacted

Revision History​

No revisions available.