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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any JWS deserialization function, the library extracts and uses the cryptographic key embedded in the attacker-controlled JWT jwk header field. An attacker can sign a token with their own private key, embed the matching public key in the header, and have the server accept the forged token as cryptographically valid — bypassing authentication and authorization entirely. This issue has been patched in version 1.6.9.
Metrics
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[{"vendor":"Red Hat","product":"Red Hat Quay 3.10","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.10::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.14","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.14::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.15","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.15::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.16","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.16::el9"]},{"vendor":"Red Hat","product":"Lightspeed Core","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:lightspeed_core"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:satellite:6"]}]
[{"vendor":"Red Hat","product":"Red Hat Quay 3.14","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.14::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.15","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.15::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.16","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.16::el9"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.1","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3.10::el8"]},{"vendor":"Red Hat","product":"Lightspeed Core","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:lightspeed_core"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:satellite:6"]}]
New CVE Received from GitHub, Inc.3/16/2026 2:16:07 PM
Action
Type
Old Value
New Value
Added
Description
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any JWS deserialization function, the library extracts and uses the cryptographic key embedded in the attacker-controlled JWT jwk header field. An attacker can sign a token with their own private key, embed the matching public key in the header, and have the server accept the forged token as cryptographically valid — bypassing authentication and authorization entirely. This issue has been patched in version 1.6.9.
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