Detections
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Echo: github.com/traefik/traefik/v3: security update to 2.11.57

high Tenable Cloud Security Plugin ID 465152

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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-2026-88008)

Solution

Update the github.com/traefik/traefik/v3 library and its related packages to version 2.11.57 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-88008

Plugin Details

Severity: High

ID: 465152

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.47

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-88008

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/29/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-88008