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Vulnerability · Published Sep 8, 2026 · Assigned by CPANSec

CVE-2026-85485HTML::FormHandler versions before 0.410002 for Perl render some error messages into HTML without escaping

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 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 81.8% 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 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libhtml-formhandler-perlno fix listedDEBIAN-CVE-2026-85485
Debian:13libhtml-formhandler-perlno fix listedDEBIAN-CVE-2026-85485
Debian:14libhtml-formhandler-perl0.410002-1DEBIAN-CVE-2026-85485
Ubuntu:22.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85485
Ubuntu:24.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85485
Ubuntu:26.04:LTSlibhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85485
Ubuntu:26.10libhtml-formhandler-perlno fix listedUBUNTU-CVE-2026-85485

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