Detections
Analytics

SCA: security update for postcss (GHSA-qx2v-qp2m-jg93)

medium Tenable Cloud Security Plugin ID 440824

Description

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

 - PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules
 into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape `</style>` sequences when
 stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML
 `<style>` tags, `</style>` in CSS values breaks out of the style context, enabling XSS. Version 8.5.10
 fixes the issue. (CVE-2026-41305)

Solution

Update the postcss library and its related packages to version 8.5.10 or later.

See Also

https://github.com/advisories/GHSA-qx2v-qp2m-jg93

Plugin Details

Severity: Medium

ID: 440824

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 4/24/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-41305

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/24/2026

Vulnerability Publication Date: 4/24/2026

Reference Information

CVE: CVE-2026-41305

cwe: CWE-79