DEBIAN-CVE-2026-19872
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-19872
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19872.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-19872
- Upstream
- Published
- 2026-09-08T20:17:29Z
- Modified
- 2026-09-15T05:00:44Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
HTML::FormHandler versions before 0.410000 for Perl allow cross-site scripting via a submitted value rendered unescaped in an error message. The wrappers and renderers that emit a form's errors interpolate the error string straight into HTML with no escaping. Two of the library's own messages, no_match and not_allowed, splice the submitted value into that string, and a failing type constraint puts the rejected value into the message it builds, which _apply_actions hands to add_error. A field declared with a check regexp, a check list or a type constraint reaches those messages, with no custom validator and no non-default configuration. Errors rendered through an application's own escaping template layer rather than the library's rendering roles are not affected. A request over the network that submits markup to such a field gets it back live inside the error span, running script in the victim's origin. Re-rendering a rejected value later gives the stored variant.
- References
Affected packages
Debian:12 / libhtml-formhandler-perl
Package
- Name
- libhtml-formhandler-perl
- Purl
- pkg:deb/debian/libhtml-formhandler-perl?arch=source&distro=bookworm
Debian:13 / libhtml-formhandler-perl
Package
- Name
- libhtml-formhandler-perl
- Purl
- pkg:deb/debian/libhtml-formhandler-perl?arch=source&distro=trixie
Debian:14 / libhtml-formhandler-perl
Package
- Name
- libhtml-formhandler-perl
- Purl
- pkg:deb/debian/libhtml-formhandler-perl?arch=source&distro=forky