CVE-2026-13601: falha de alta gravidade em Red Hat Enterprise Linux 6
Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.1epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Produtos afetados
Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.6 Extended Update SupportCVEs relacionadas — Red Hat Enterprise Linux 6
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Referências
https://access.redhat.com/errata/RHSA-2026:47177https://access.redhat.com/errata/RHSA-2026:47178https://access.redhat.com/errata/RHSA-2026:54539https://access.redhat.com/errata/RHSA-2026:54540https://access.redhat.com/errata/RHSA-2026:54605https://access.redhat.com/errata/RHSA-2026:54624https://access.redhat.com/errata/RHSA-2026:54637https://access.redhat.com/errata/RHSA-2026:54666https://access.redhat.com/errata/RHSA-2026:57417https://access.redhat.com/security/cve/CVE-2026-13601https://blogs.gnome.org/mcatanzaro/2026/05/11/flatpak-sandbox-escape-via-yelp/https://bugzilla.redhat.com/show_bug.cgi?id=2494110