github - ghsa-v825-mc9m-64qr

GHSA-V825-MC9M-64QR

Vulnerability from github – Published: 2025-11-27 00:30 – Updated: 2025-11-28 21:31

Details

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)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

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  "affected": [],
  "aliases": [
    "CVE-2025-40934"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-26T23:15:47Z",
    "severity": "CRITICAL"
  },
  "details": "XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted.\n\nAn attacker can remove the signature from the XML document to make it pass the verification check.\n\nXML-Sig is a Perl module to validate signatures on XML files.\u00a0 An unsigned XML file should return an error message.\u00a0 The affected versions return true when attempting to validate an XML file that contains no signatures.",
  "id": "GHSA-v825-mc9m-64qr",
  "modified": "2025-11-28T21:31:18Z",
  "published": "2025-11-27T00:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40934"
    },
    {
      "type": "WEB",
      "url": "https://github.com/perl-net-saml2/perl-XML-Sig/issues/63"
    },
    {
      "type": "WEB",
      "url": "https://github.com/perl-net-saml2/perl-XML-Sig/pull/64"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-40934 (GCVE-0-2025-40934)

Vulnerability from cvelistv5 – Published: 2025-11-26 22:34 – Updated: 2025-11-28 18:54

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)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

CPANSec

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

	Vendor	Product	Version
	TIMLEGGE	XML::Sig	Affected: 0.27 , < 0.68 (custom)

Credits

gttds

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JSON

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        "metrics": [
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.3,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "LOW",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N",
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                "options": [
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-28T18:50:44.544431Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
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          "dateUpdated": "2025-11-28T18:54:00.742Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      }
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          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "XML-Sig",
          "product": "XML::Sig",
          "programFiles": [
            "lib/XML/Sig.pm"
          ],
          "programRoutines": [
            {
              "name": "verify()"
            }
          ],
          "repo": "https://github.com/perl-net-saml2/perl-XML-Sig",
          "vendor": "TIMLEGGE",
          "versions": [
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              "status": "affected",
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      "impacts": [
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          "url": "https://github.com/perl-net-saml2/perl-XML-Sig/pull/64"
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    "dateReserved": "2025-04-16T09:05:34.363Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-V825-MC9M-64QR

CVE-2025-40934 (GCVE-0-2025-40934)

Tags

Sightings

Nomenclature