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Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications (Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support)

CVE-2026-13601
HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.18 % · percentile 7 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Modified

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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.

Weaknesses (CWE)

  • CWE-693 — Protection Mechanism Failure

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nredhat
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nredhat-SADP
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NNVD · secalert@redhat.com (Secondary)
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NNVD · nvd@nist.gov (Primary)
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NNVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 2:3.28.1-2.el7_9 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 2:3.28.1-3.el8_10.2 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 2:3.28.1-3.el8_4.2 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 2:3.28.1-3.el8_4.2 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 2:3.28.1-3.el8_6.2 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 2:3.28.1-3.el8_6.2 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 2:3.28.1-3.el8_8.2 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 2:3.28.1-3.el8_8.2 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 2:40.3-3.el9_8.1 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 2:40.3-2.el9_2.2 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 2:40.3-2.el9_4.2 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 2:40.3-2.el9_6.2 < *
Red Hat · Red Hat Enterprise Linux 6

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD