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SCA: security update for github.com/vouch/vouch-proxy (GHSA-qqff-5854-px68)

high Tenable Self-Hosted Container Security Plugin ID 446161

Description

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

 - Vouch Proxy is an SSO and OAuth/OIDC login solution for Nginx using the auth_request module. Prior to
 0.48.0, Cookie in pkg/cookie/cookie.go parses the total part count from an attacker-controlled multipart
 cookie name and passes the value to make([]string, numParts) without checking that the value is positive
 or reasonably bounded. Requests to /validate and /_external-auth-:id reach JWTCacheHandler in
 pkg/jwtmanager/jwtcache.go, FindJWT in pkg/jwtmanager/jwtmanager.go, and the vulnerable cookie reassembly
 before JWT validation, so no account or valid session is required. A cookie name such as
 VouchCookie_1of10000000000 causes an attempted slice allocation of roughly 160 GB and a fatal Go runtime
 out-of-memory condition, allowing one request to crash the authentication proxy and repeated requests to
 sustain unavailability. This vulnerability is fixed in 0.48.0. (CVE-2026-55149)

Solution

Update the github.com/vouch/vouch-proxy library and its related packages to version 0.48.0 or later.

See Also

https://github.com/advisories/GHSA-qqff-5854-px68

Plugin Details

Severity: High

ID: 446161

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 8/20/2026

Updated: 10/1/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.66

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-2026-55149

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: 8/20/2026

Vulnerability Publication Date: 8/20/2026

Reference Information

CVE: CVE-2026-55149

cwe: CWE-789