CVE Explorer
CVE-2026-18092
Net::SAML2 versions before 0.86 for Perl allow SAML authentication bypass via XML signature wrapping because new_from_xml reads assertion identity with document-wide XPath instead of the signed subtree.
new_from_xml reads the NameID, attribute values, SessionIndex, audience and other identity fields with document-wide XPath, such as //saml:Assertion/saml:AttributeStatement/saml:Attribute and //saml:Subject/saml:NameID, which select the first matching element in document order rather than the el
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Net-SAML2","product":"Net::SAML2","programFiles":["lib/Net/SAML2/Protocol/Assertion.pm","lib/Net/SAML2/Binding/POST.pm"],"programRoutines":[{"name":"Net::SAML2::Protocol::Assertion::new_from_xml"},{"name":"Net::SAML2::Binding::POST::handle_response"}],"repo":"https://github.com/perl-net-saml2/perl-Net-SAML2","vendor":"TIMLEGGE","versions":[{"lessThan":"0.86","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:61575741a3f6f6e54eb679f62bb7c7ecd93321148dd441edc8a319ffb66a51cf · sha256:5a61e724d76451cc… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:61575741a3f6f6e54eb679f62bb7c7ecd93321148dd441edc8a319ffb66a51cf · sha256:5a61e724d76451cc… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-347","description":"CWE-347 Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:61575741a3f6f6e54eb679f62bb7c7ecd93321148dd441edc8a319ffb66a51cf · sha256:5a61e724d76451cc… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["patch"],"url":"https://github.com/perl-net-saml2/perl-Net-SAML2/commit/201fead7f42b83f40c84bf4a311a25b09acd18f9.patch"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:61575741a3f6f6e54eb679f62bb7c7ecd93321148dd441edc8a319ffb66a51cf · sha256:5a61e724d76451cc… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://metacpan.org/release/TIMLEGGE/Net-SAML2-0.86/changes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:61575741a3f6f6e54eb679f62bb7c7ecd93321148dd441edc8a319ffb66a51cf · sha256:5a61e724d76451cc… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.