Cross-site scripting in HTML-FormHandler
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
HTML::FormHandler versions before 0.410002 for Perl render option group labels and radio button labels into HTML without escaping. The Select, RadioGroup, CheckboxGroup and HorizCheckboxGroup widgets render a group label unescaped, Select into a label attribute and the other three into element content. RadioGroup also renders each radio button's own label unescaped. Any application whose option list is built from data rather than literals, using options_from, an options_fieldname method, or the DBIC model, allows attacker-influenced text in a label that can override the options or embed JavaScript in rendered pages.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | HTML-FormHandler | before 0.410002 | 0.410002 | Patch available | CNA |
- HTML-FormHandler Vendor— Affected before 0.410002 Fixed in 0.410002 Patch available CNA
Remediation
- Fix · CNA HTML-FormHandler Fixed in 0.410002
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-85484
- 2026-10-03 Alias added: GHSA-mwmv-8rm6-755x
References
Sources
- CVE-2026-85484 · CVE Program
- CVE-2026-85484 · NVD
- FIRST EPSS
- GHSA-mwmv-8rm6-755x · GitHub Advisory Database · CC BY 4.0
- CVE-2026-85484 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences