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  4. CVE 2026 121632 datamuform versions through 005 for perl render
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-121632

Data::MuForm versions through 0.05 for Perl render attribute values and option labels into HTML without escapingCVE-2026-121632

Answer in brief

CVE-2026-121632 records a Unknown severity vulnerability in Data::MuForm versions through 0.05 for Perl render attribute values and option labels into HTML without escaping. The current sources do not mark it as known exploited. The current feed maps Data-MuForm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Data-MuForm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Data-MuFormgeneric>=0 <=0.05Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Data-MuForm.
  2. 2Review the reported fix. Source-reported solution: No fixed CPAN release is currently available. Apply the patch.

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencemetacpan.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Web::Simple versions before 0.036 for Perl do not escape values interpolated into double-quoted strings in HTML::Tags outputAlso CWE-79
  • WordPress Noptin plugin <= 4.4.2 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • SQL::Abstract::Tree versions before 2.000001_04 for Perl allow cross-site scripting via unescaped SQL text and bind values in the html profileAlso CWE-79
  • Remove Google Fonts <= 1.7 - Unauthenticated Stored Cross-Site Scripting via Comment Field via Regex-Mangled Output BufferAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Nov 4, 2026
References
2 linked sources
Open source record