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 OpenU…
High CVSS 7.1
Summary
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…
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
- :
Sources
- NVD DATABASE
Original Links
- https://access.redhat.com/errata/RHSA-2026:47177
- https://access.redhat.com/security/cve/CVE-2026-13601 Vendor Advisory
- https://blogs.gnome.org/mcatanzaro/2026/05/11/flatpak-sandbox-escape-via-yelp/ Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2494110 Issue Tracking
- https://gitlab.gnome.org/GNOME/yelp/-/commit/c8c8244c8a812860782d635890c9b6c43ecc2639 Patch
- https://gitlab.gnome.org/GNOME/yelp/-/work_items/238 Issue Tracking
- https://access.redhat.com/security/cve/CVE-2026-13601 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2494110 Issue Tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13601.json Vendor Advisory
Timeline
- nvd_ingest NVD