CVE-2026-13601
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
49/100
Published: 2026-06-29
Modified: 2026-11-04
First seen: 2026-11-04
Status: active
Attack Surface
Low Complexity
No Auth
No Interaction
Conf. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
High
I:
None
A:
None
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 (1)
Affected Software (5)
| Vendor | Product | Version |
|---|---|---|
| gnome | yelp | < 49.1 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
References & Advisories (15)
Vendor Advisory
Vendor Advisory
Third Party Advisory
Patch
Issue Tracking
Vendor Advisory
Issue Tracking
Mitigation
Third Party Advisory