Bug 2530130 (CVE-2026-85630)

Summary: CVE-2026-85630 perl-HTML-FormHandler: perl-HTML-FormHandler: Cross-site Scripting vulnerability via unescaped HTML field attributes
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in perl-HTML-FormHandler. This vulnerability allows a remote attacker to inject malicious scripts into web pages due to the `process_attrs` method failing to properly escape field attributes when rendering HTML. By manipulating input, an attacker can embed JavaScript, leading to Cross-site Scripting (XSS) attacks. This could result in unauthorized access to sensitive information or actions performed on behalf of the user.
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Bug Depends On: 2530531    
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Description OSIDB Bzimport 2026-09-08 20:25:34 UTC 
HTML::FormHandler versions before 0.410002 for Perl render field attributes into HTML without escaping using the process_attrs method.

Any application with fields or field labels where some attributes are built from data rather than literals allows attacker-influenced text in an attribute value that can override the field attributes or embed JavaScript in rendered pages.

For example, the RadioGroup widget uses the process_attrs method via the render_option and wrap_radio methods.