{"id":"AZL-105642","summary":"CVE-2026-103001 affecting package python-jwt 2.13.0-1","details":"PyJWT is a Python implementation of JSON Web Token standards. From 2.11.0 through 2.13.0, PyJWT's PyJWT._merge_options() method can modify a caller-supplied mutable options mapping when verify_signature is false. If an application reuses that same mapping for a later decode() or decode_complete() call and changes verify_signature to true, the mapping can retain false values for expiration, not-before, issued-at, audience, issuer, subject, and JWT ID checks. A signed token with invalid registered claims can then be accepted without disabling signature verification, but applications that create a fresh options mapping for each call are not affected.","modified":"2026-10-04T05:34:07Z","published":"2026-09-30T22:16:33Z","upstream":["CVE-2026-103001"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103001"}],"affected":[{"package":{"name":"python-jwt","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python-jwt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.13.0-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105642.json"}}],"schema_version":"1.9.0"}