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

CVE-2026-85485 is fixed in libhtml-formhandler-perl on 1 platform by DEBIAN-CVE-2026-85485 (version 0.410002-1), released September 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-85485
- Priority: Routine
- CVSS: 6.1 (medium)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 8, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libhtml-formhandler-perl Debian 14 | 0.410002-1 | [DEBIAN-CVE-2026-85485](https://patchblox.com/security/data/fix/linux/debian-cve-2026-85485.md) | Sep 17, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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