Bug 2555679 - CVE-2026-109597 hugo: Hugo: Stored cross-site scripting via crafted heading identifiers [fedora-44]
Summary: CVE-2026-109597 hugo: Hugo: Stored cross-site scripting via crafted heading i...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: hugo
Version: 44
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Athos Ribeiro
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["e73e0322-7c3e-4d37-94a5-5...
Depends On:
Blocks: CVE-2026-109597
TreeView+ depends on / blocked
 
Reported: 2026-10-19 16:11 UTC by Joel Chamberlain
Modified: 2026-10-19 16:11 UTC (History)
8 users (show)

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

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Description Joel Chamberlain 2026-10-19 16:11:03 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.

Hugo from v0.60.0 before v0.167.0 contains a stored cross-site scripting vulnerability that allows Markdown content authors to inject HTML by supplying crafted explicit heading IDs. Attackers can break out of the unescaped href attribute in .TableOfContents or .Fragments.ToHTML output to inject elements with event handlers into rendered pages.
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