VULNERABILITY INTELLIGENCE

CVE-2026-13601

CVSS score7.1 HIGH
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-06-29
Last modified2026-08-20
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Description

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.

Weakness classification

  • secalert@redhat.com: CWE-693
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-693

Primary references