{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9487", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-05-24T13:47:37.954Z", "datePublished": "2026-08-03T13:14:43.135Z", "dateUpdated": "2026-08-03T19:59:47.580Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "XML-Sig", "product": "XML::Sig", "programFiles": ["lib/XML/Sig.pm"], "programRoutines": [{"name": "XML::Sig::verify"}, {"name": "XML::Sig::_get_signed_xml"}], "repo": "https://github.com/perl-net-saml2/perl-XML-Sig", "vendor": "TIMLEGGE", "versions": [{"lessThan": "0.71", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "XML::Sig versions before 0.71 for Perl allow signature wrapping via duplicate ID.\n\n_get_signed_xml() in lib/XML/Sig.pm, called from verify(), resolves the SignedInfo Reference/@URI to a node with the XPath expression \"//*[@ID='$id']\" and returns the first node of the resulting node set. A document in which two elements share that ID value is accepted: the digest and signature are checked against whichever element comes first in document order, and the duplicate is not detected.\n\nSuch a document verifies successfully while an application that resolves the same ID independently can read the second, attacker supplied element; in a SAML2 context this places the contents of an Assertion under attacker control."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-08-03T13:14:43.135Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/perl-net-saml2/perl-XML-Sig/commit/4976bde5245df69b8e02c6ae061acbd4891cd7f9.patch"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/TIMLEGGE/XML-Sig-0.71/source/Changes"}], "solutions": [{"lang": "en", "value": "Upgrade to version 0.71"}], "source": {"discovery": "UNKNOWN"}, "title": "XML::Sig versions before 0.71 for Perl allow signature wrapping via duplicate ID", "workarounds": [{"lang": "en", "value": "Signing the outermost <samlp:Response> element rather than only the inner <saml:Assertion> reduces exposure, but does not prevent wrapping variants in which the duplicate ID is introduced outside the signed element. Upgrading to 0.71 is the complete fix."}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-03T19:59:25.051641Z", "id": "CVE-2026-9487", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-03T19:59:47.580Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.71)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "XML::Sig", "source": "cna", "vendor": "TIMLEGGE"}, "product": "xml::sig", "vendor": "timlegge"}], "created": "2026-08-03T15:51:30.932559+00:00", "updated": "2026-08-03T15:51:30.932602+00:00", "vendors": ["timlegge", "timlegge$PRODUCT$xml::sig"]}