CVE-2026-13601
Fixed in a distro release EPSS <1%CVSS 7.1
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.
Products: Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 8 | yelp | 2:3.28.1-3.el8_10.2 |
| AlmaLinux 8 | yelp-devel | 2:3.28.1-3.el8_10.2 |
| AlmaLinux 8 | yelp-libs | 2:3.28.1-3.el8_10.2 |
| AlmaLinux 9 | yelp | 2:40.3-3.el9_8.1 |
| AlmaLinux 9 | yelp-devel | 2:40.3-3.el9_8.1 |
| AlmaLinux 9 | yelp-libs | 2:40.3-3.el9_8.1 |
| Debian 12 | yelp | 42.2-1+deb12u2 |
| Debian 13 | yelp | 42.2-4+deb13u1 |
| Debian 14 | yelp | 49.1-1 |
| Red Hat Enterprise Linux 8 | yelp | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 8 | yelp-debuginfo | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 8 | yelp-debugsource | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 8 | yelp-devel | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 8 | yelp-libs | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 8 | yelp-libs-debuginfo | 2:3.28.1-3.el8_10.2 |
| Red Hat Enterprise Linux 9 | yelp | 2:40.3-3.el9_8.1 |
| Red Hat Enterprise Linux 9 | yelp-debuginfo | 2:40.3-3.el9_8.1 |
| Red Hat Enterprise Linux 9 | yelp-debugsource | 2:40.3-3.el9_8.1 |
| Red Hat Enterprise Linux 9 | yelp-devel | 2:40.3-3.el9_8.1 |
| Red Hat Enterprise Linux 9 | yelp-libs | 2:40.3-3.el9_8.1 |
| Red Hat Enterprise Linux 9 | yelp-libs-debuginfo | 2:40.3-3.el9_8.1 |
| Red Hat rhel aus 8.4 | yelp | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel aus 8.4 | yelp-debuginfo | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel aus 8.4 | yelp-debugsource | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel aus 8.4 | yelp-libs | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel aus 8.4 | yelp-libs-debuginfo | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel aus 8.6 | yelp | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel aus 8.6 | yelp-debuginfo | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel aus 8.6 | yelp-debugsource | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel aus 8.6 | yelp-libs | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel aus 8.6 | yelp-libs-debuginfo | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel e4s 8.8 | yelp | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel e4s 8.8 | yelp-debuginfo | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel e4s 8.8 | yelp-debugsource | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel e4s 8.8 | yelp-libs | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel e4s 8.8 | yelp-libs-debuginfo | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel e4s 9.2 | yelp | 2:40.3-2.el9_2.2 |
| Red Hat rhel e4s 9.2 | yelp-debuginfo | 2:40.3-2.el9_2.2 |
| Red Hat rhel e4s 9.2 | yelp-debugsource | 2:40.3-2.el9_2.2 |
| Red Hat rhel e4s 9.2 | yelp-libs | 2:40.3-2.el9_2.2 |
| Red Hat rhel e4s 9.2 | yelp-libs-debuginfo | 2:40.3-2.el9_2.2 |
| Red Hat rhel e4s 9.4 | yelp | 2:40.3-2.el9_4.2 |
| Red Hat rhel e4s 9.4 | yelp-debuginfo | 2:40.3-2.el9_4.2 |
| Red Hat rhel e4s 9.4 | yelp-debugsource | 2:40.3-2.el9_4.2 |
| Red Hat rhel e4s 9.4 | yelp-libs | 2:40.3-2.el9_4.2 |
| Red Hat rhel e4s 9.4 | yelp-libs-debuginfo | 2:40.3-2.el9_4.2 |
| Red Hat rhel els 7 | yelp | 2:3.28.1-2.el7_9 |
| Red Hat rhel els 7 | yelp-debuginfo | 2:3.28.1-2.el7_9 |
| Red Hat rhel els 7 | yelp-devel | 2:3.28.1-2.el7_9 |
| Red Hat rhel els 7 | yelp-libs | 2:3.28.1-2.el7_9 |
| Red Hat rhel eus 9.6 | yelp | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus 9.6 | yelp-debuginfo | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus 9.6 | yelp-debugsource | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus 9.6 | yelp-devel | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus 9.6 | yelp-libs | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus 9.6 | yelp-libs-debuginfo | 2:40.3-2.el9_6.2 |
| Red Hat rhel eus long life 8.4 | yelp | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel eus long life 8.4 | yelp-debuginfo | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel eus long life 8.4 | yelp-debugsource | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel eus long life 8.4 | yelp-libs | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel eus long life 8.4 | yelp-libs-debuginfo | 2:3.28.1-3.el8_4.2 |
| Red Hat rhel eus long life 8.6 | yelp | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel eus long life 8.6 | yelp-debuginfo | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel eus long life 8.6 | yelp-debugsource | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel eus long life 8.6 | yelp-libs | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel eus long life 8.6 | yelp-libs-debuginfo | 2:3.28.1-3.el8_6.2 |
| Red Hat rhel tus 8.8 | yelp | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel tus 8.8 | yelp-debuginfo | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel tus 8.8 | yelp-debugsource | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel tus 8.8 | yelp-libs | 2:3.28.1-3.el8_8.2 |
| Red Hat rhel tus 8.8 | yelp-libs-debuginfo | 2:3.28.1-3.el8_8.2 |
| Rocky Linux 8 | yelp | 2:3.28.1-3.el8_10.2 |
| Rocky Linux 9 | yelp | 2:40.3-3.el9_8.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | yelp | 42.2-150600.3.6.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | yelp | 3.20.1-7.6.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | yelp | 42.2-150600.3.6.1 |
| SUSE Linux Enterprise Server 16.0 | yelp | 42.3-160000.3.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | yelp | 3.20.1-7.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | yelp | 41.2-150400.3.6.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | yelp | 42.2-150600.3.6.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | yelp | 42.3-160000.3.1 |
| Ubuntu 22.04 LTS | yelp | 42.1-1ubuntu0.2 |
| Ubuntu 24.04 LTS | yelp | 42.2-1ubuntu0.24.04.2 |
| Ubuntu 25.10 | yelp | no fix |
| Ubuntu 26.04 LTS | yelp | 49.0-5ubuntu0.1 |
| Ubuntu Pro 16.04 LTS | yelp | 3.18.1-1ubuntu4+esm1 |
| Ubuntu Pro 18.04 LTS | yelp | 3.26.0-1ubuntu2+esm1 |
| Ubuntu Pro 20.04 LTS | yelp | 3.36.2-0ubuntu1.1+esm1 |
| openSUSE Leap 16.0 | yelp | 42.3-160000.3.1 |