CVE-2026-85485

HTML::FormHandler versions before 0.410002 for Perl render some error messages into HTML without escaping

Published Sep 8, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Upgrade to HTML-FormHandler 0.410002 or later.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Gshank
Gshank html::formhandler
Vendors & Products Gshank
Gshank html::formhandler
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title HTML::FormHandler versions before 0.410002 for Perl render some error messages into HTML without escaping
Weaknesses CWE-79
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
CPANSec
Published
Updated
Sep 10, 2026, 5:49 PM
Reserved
Sep 3, 2026, 9:29 PM
Status
Deferred
Published
Sep 8, 2026, 8:18 PM
Modified
Sep 10, 2026, 6:18 PM