Bug 2496078 - CVE-2026-39823 gh: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content [epel-all]
Summary: CVE-2026-39823 gh: Go html/template: Cross-Site Scripting via improper URL es...
Keywords:
Status: NEW
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: gh
Version: epel10
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Mikel Olasagasti Uranga
QA Contact:
URL:
Whiteboard: {"flaws": ["004e999a-ba42-4ddf-bdc4-6...
Depends On:
Blocks: CVE-2026-39823
TreeView+ depends on / blocked
 
Reported: 2026-07-01 17:38 UTC by Matteo Signorini
Modified: 2026-07-01 17:38 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Matteo Signorini 2026-07-01 17:38:36 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.
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