Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Red Hat Red Hat Enterprise Linux 8 — Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N C H N N 6.5 .0013 3.2 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 8 unspecified 2:3.28.1-3.el8_10.2
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support unspecified 2:3.28.1-3.el8_4.2
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On unspecified 2:3.28.1-3.el8_4.2
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support unspecified 2:3.28.1-3.el8_6.2
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On unspecified 2:3.28.1-3.el8_6.2
Red Hat Enterprise Linux 8.8 Telecommunications Update Service unspecified 2:3.28.1-3.el8_8.2
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions unspecified 2:3.28.1-3.el8_8.2
Red Hat Enterprise Linux 9 unspecified 2:40.3-3.el9_8.1
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions unspecified 2:40.3-2.el9_2.2
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions unspecified 2:40.3-2.el9_4.2
+ 3 more
TIMELINE
Jun 29 Reserved by redhat
Jun 29 Published (CNA: redhat)
Aug 14 RESCORED — CVE-2026-13601 (Red Hat Enterprise Linux 8). CVSS 7.1 → 6.5 (NVD).
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 29, 2026 | Reserved | Reserved by redhat |
| June 29, 2026 | Published | Published (CNA: redhat) |
| August 14, 2026 | RESCORED | RESCORED — CVE-2026-13601 (Red Hat Enterprise Linux 8). CVSS 7.1 → 6.5 (NVD). |
Affected
Affected products and packages — 13 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | — | 2:3.28.1-3.el8_10.2 |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — | 2:3.28.1-3.el8_4.2 |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — | 2:3.28.1-3.el8_4.2 |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — | 2:3.28.1-3.el8_6.2 |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — | 2:3.28.1-3.el8_6.2 |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — | 2:3.28.1-3.el8_8.2 |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — | 2:3.28.1-3.el8_8.2 |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | 2:40.3-3.el9_8.1 |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — | 2:40.3-2.el9_2.2 |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — | 2:40.3-2.el9_4.2 |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — | 2:40.3-2.el9_6.2 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-13601 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.