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

critical Tenable Cloud Security Plugin ID 460347

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 2.11.0 until 2.11.57 and 3.7.13, the
 HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a
 shared backend transport instead of a transport dedicated to each frontend connection. With HTTP/3
 enabled, a backend using connection-bound NTLM or Negotiate authentication, and backend keep-alive, an
 unrelated client can reuse a backend connection authenticated for a victim, read victim-only data, and act
 as that victim without the victim credentials. This issue is fixed in 2.11.57 and 3.7.13. (CVE-2026-88007)

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-2026-88007

Plugin Details

Severity: Critical

ID: 460347

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

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-2026-88007

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: Critical

Base Score: 9.1

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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-2026-88007