https://bugzilla.redhat.com/show_bug.cgi?id=2533729
Bug ID: 2533729
Summary: CVE-2026-85485 perl-HTML-FormHandler:
HTML::FormHandler: Cross-Site Scripting via unescaped
error messages [fedora-all]
Product: Fedora
Version: rawhide
Status: NEW
Whiteboard: {"flaws": ["a90a66d9-6b36-4ba4-a5eb-d0419ea9ab23"]}
Component: perl-HTML-FormHandler
Keywords: Security, SecurityTracking
Severity: high
Priority: high
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
CC: [email protected], [email protected]
Blocks: 2530115 (CVE-2026-85485)
Target Milestone: ---
Classification: Fedora
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.
HTML::FormHandler versions before 0.410002 for Perl render some error messages
into HTML without escaping.
The Table form layout and the Bootstrap 2 and 3 wrappers splice each error
string straight into the surrounding markup. Version 0.410000, the fix for
CVE-2026-19872, escaped the equivalent values in the other layouts and
wrappers, and 0.410002 extended that to these three.
Error messages that contain attacker-influenced content such as rejected field
values could embed JavaScript in rendered pages.
Referenced Bugs:
https://bugzilla.redhat.com/show_bug.cgi?id=2530115
[Bug 2530115] CVE-2026-85485 perl-HTML-FormHandler: HTML::FormHandler:
Cross-Site Scripting via unescaped error messages
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