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Vulnerability · Published Sep 8, 2026 · Assigned by CPANSec

CVE-2026-85630HTML::FormHandler versions before 0.410002 for Perl render field attributes into HTML without escaping using the process_attrs method

Medium 6.1

In plain English

A medium-severity cross-site scripting in HTML-FormHandler. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 84.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libhtml-formhandler-perlno fix listedDEBIAN-CVE-2026-85630
Debian:13libhtml-formhandler-perlno fix listedDEBIAN-CVE-2026-85630
Debian:14libhtml-formhandler-perl0.410002-1DEBIAN-CVE-2026-85630
Ubuntu:22.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85630
Ubuntu:24.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85630
Ubuntu:26.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85630
Ubuntu:26.10libhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85630

Affected products (as reported)

VendorProductVersions
HTML-FormHandler 0 – before 0.410002

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References