Detections
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SCA: security update for github.com/traefik/traefik/v2, github.com/traefik/traefik/v3 (GHSA-xw98-5q62-jx94)

high Tenable Self-Hosted Container Security Plugin ID 438308

Description

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

 - 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. (CVE-2026-26999)

See Also

https://github.com/advisories/GHSA-xw98-5q62-jx94

Plugin Details

Severity: High

ID: 438308

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/4/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-26999

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/4/2026

Vulnerability Publication Date: 3/4/2026

Reference Information

CVE: CVE-2026-26999

cwe: CWE-400