{"action":"Upgrade azure-core to 1.38.0 or later.","affected":[{"fixed":"1.38.0","introduced":"0"}],"component":"azure-core","cve_ids":["CVE-2026-21226"],"ecosystem":"PyPI","epss":0.0095,"exploited":false,"fixed_versions":["1.38.0"],"ghsa_id":"GHSA-jm66-cg57-jjv5","id":"tcs_01M5KGR77WXAFQJKACM45QX2Y0","modified_at":"2026-07-07T17:47:32.613512309Z","published_at":"2026-07-07T16:03:18.455480Z","references":["https://osv.dev/vulnerability/PYSEC-2026-1208","https://nvd.nist.gov/vuln/detail/CVE-2026-21226","https://github.com/Azure/azure-sdk-for-python","https://github.com/Azure/azure-sdk-for-python/blob/6d2e6431ea0991861640e449e51e894247a7771a/sdk/core/azure-core/CHANGELOG.md#1380-2026-01-12","https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21226","https://pypi.org/project/azure-core","https://github.com/advisories/GHSA-jm66-cg57-jjv5"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-1208","url":"https://osv.dev/vulnerability/PYSEC-2026-1208"}],"summary":"Azure Core is vulnerable to deserialization of untrusted data"}