Detections
Analytics

SCA: security update for actionpack (GHSA-pgm4-439c-5jp6)

medium Tenable Self-Hosted Container Security Plugin ID 439113

Description

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

 - Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1
 branch prior to 8.1.2.1, the debug exceptions page does not properly escape exception messages. A
 carefully crafted exception message could inject arbitrary HTML and JavaScript into the page, leading to
 XSS. This affects applications with detailed exception pages enabled (`config.consider_all_requests_local
 = true`), which is the default in development. Version 8.1.2.1 contains a patch. (CVE-2026-33167)

Solution

Update the actionpack library and its related packages to version 8.1.2.1 or later.

See Also

https://github.com/advisories/GHSA-pgm4-439c-5jp6

Plugin Details

Severity: Medium

ID: 439113

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 3/24/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.42

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2026-33167

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 1.3

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/23/2026

Vulnerability Publication Date: 3/23/2026

Reference Information

CVE: CVE-2026-33167

cwe: CWE-79