{"action":"Upgrade pysaml2 to 6.5.0 or later.","affected":[{"fixed":"6.5.0","introduced":"0"}],"component":"pysaml2","cve_ids":["CVE-2021-21238"],"ecosystem":"PyPI","epss":0.01096,"exploited":false,"fixed_versions":["6.5.0"],"ghsa_id":"GHSA-f4g9-h89h-jgv9","id":"tcs_01M5KFEBP79BM2SQKGKCHVGXCR","modified_at":"2026-09-10T03:49:13.856780354Z","published_at":"2021-01-21T14:12:16Z","references":["https://osv.dev/vulnerability/GHSA-f4g9-h89h-jgv9","https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9","https://nvd.nist.gov/vuln/detail/CVE-2021-21238","https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14","https://github.com/IdentityPython/pysaml2","https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0","https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2021-48.yaml","https://pypi.org/project/pysaml2"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-f4g9-h89h-jgv9","url":"https://osv.dev/vulnerability/GHSA-f4g9-h89h-jgv9"}],"summary":"SAML XML Signature wrapping in PySAML2"}