CVE-2026-102267

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{"bugzilla": {"description": "pyjwt: pyjwt: Verification key substitution via unvalidated JWKS redirects", "id": "2542690", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542690"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-346", "details": ["A flaw was found in PyJWT. When retrieving cryptographic keys from a JSON Web Key Set (JWKS) endpoint, PyJWKClient fails to validate HTTP redirect destinations against trusted domain boundaries. A remote attacker who can influence the response of a trusted endpoint can redirect key requests to an untrusted server, allowing the client to accept forged verification keys or potentially exposing sensitive credentials."], "name": "CVE-2026-102267", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "jaeger", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "llvm21", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "swift-lang", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-28T20:23:33Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-102267\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-102267\nhttps://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56\nhttps://github.com/jpadilla/pyjwt/releases/tag/2.14.0\nhttps://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj"], "threat_severity": "Important"}

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