Protection Mechanism Failure Affecting yelp package, versions <2:3.28.1-1.amzn2.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-YELP-18059979
  • published21 Jul 2026
  • disclosed29 Jun 2026

Introduced: 29 Jun 2026

CVE-2026-13601  (opens in a new tab)
CWE-693  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 yelp to version 2:3.28.1-1.amzn2.0.2 or higher.
This issue was patched in ALAS2-2026-3821.

NVD Description

Note: Versions mentioned in the description apply only to the upstream yelp package and not the yelp package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in Yelp due to an overly permissive Content Security Policy (CSP) implementation provided by yelp-xsl. A malicious Flatpak application can open crafted help content through the OpenURI portal. By embedding an untrusted CSS stylesheet within a structured SVG document, attacker-controlled content can bypass Flatpak's intended sandbox isolation, allowing Yelp to evaluate local XML inclusions and disclose arbitrary user-readable host files through remote CSS resource requests. This may result in the unauthorized disclosure of sensitive information.

CVSS Base Scores

version 3.1