Data::MuForm versions through 0.05 for Perl render attribute values and option labels into HTML without escaping.

process_attrs writes each attribute value into the markup as is. The select, radio group and checkbox group renderers pass each option to it, so an option's value becomes an unescaped attribute. Option and option group labels are also unescaped, the group label inside a label attribute and the others in element content.

Any application whose option list is built from data rather than literals, using an options_<field_name> method, a build_options method or a DBIC model, allows attacker-influenced text in an option value or label that can embed JavaScript in rendered pages. Attribute values built from data, such as through element_attr, are affected the same way.

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Fixes

Solution

No fixed CPAN release is currently available. Apply the patch.


Workaround

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History

Wed, 04 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description Data::MuForm versions through 0.05 for Perl render attribute values and option labels into HTML without escaping. process_attrs writes each attribute value into the markup as is. The select, radio group and checkbox group renderers pass each option to it, so an option's value becomes an unescaped attribute. Option and option group labels are also unescaped, the group label inside a label attribute and the others in element content. Any application whose option list is built from data rather than literals, using an options_<field_name> method, a build_options method or a DBIC model, allows attacker-influenced text in an option value or label that can embed JavaScript in rendered pages. Attribute values built from data, such as through element_attr, are affected the same way.
Title Data::MuForm versions through 0.05 for Perl render attribute values and option labels into HTML without escaping
Weaknesses CWE-79
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-11-04T14:23:14.516Z

Reserved: 2026-11-03T17:04:45.320Z

Link: CVE-2026-121632

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T15:17:42.130

Modified: 2026-11-04T15:17:42.130

Link: CVE-2026-121632

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T15:45:15Z

Weaknesses