CVE-2025-40934 (GCVE-0-2025-40934)
Vulnerability from cvelistv5 – Published: 2025-11-26 22:34 – Updated: 2025-11-28 18:54
VLAI
EPSS
VEX
Title
XML-Sig prior to 0.68 for Perl improperly validates XML without signatures
Summary
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-28 18:50 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/perl-net-saml2/perl-XML-Sig/is… | issue-tracking |
| https://github.com/perl-net-saml2/perl-XML-Sig/pull/64 | patch |
Impacted products
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