CVE-2025-40934
criticalpriority · track · 0EPSS 0.002 · 7 %ileEUUSEPSS · scored 2026-10-27
XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted. An attacker can remove the signature from the XML document to make it pass the verification check. XML-Sig is a Perl module to validate signatures on XML files. An unsigned XML file should return an error message. The affected versions return true when attempting to validate an XML file that contains no signatures.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.5–9.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-40934cnnvd
- https://github.com/perl-net-saml2/perl-XML-Sig/issues/63cnnvd
- https://github.com/perl-net-saml2/perl-XML-Sig/pull/64cnnvd
- https://github.com/perl-net-saml2/perl-XML-Sig/issues/63enisa_euvd
- https://github.com/perl-net-saml2/perl-XML-Sig/pull/64enisa_euvd
- https://github.com/perl-net-saml2/perl-XML-Sig/issues/63Issue TrackingPatchnvd
- https://github.com/perl-net-saml2/perl-XML-Sig/pull/64Issue Trackingnvd
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