PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.
https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9 https://github.com/IdentityPython/pysaml2/commit/3b707723dcf1bf60677b424aac398c0c3557641d https://github.com/advisories/GHSA-f4g9-h89h-jgv9 https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14 https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0 https://pypi.org/project/pysaml2 https://nvd.nist.gov/vuln/detail/CVE-2021-21238
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