Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-jq35-7prp-9v3f | PyJWT: Algorithm allow-list bypass when decoding with `PyJWK` / `PyJWKClient` keys |
Fri, 05 Jun 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Mon, 01 Jun 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Pyjwt Project
Pyjwt Project pyjwt |
|
| CPEs | cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Pyjwt Project
Pyjwt Project pyjwt |
Thu, 28 May 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Jpadilla
Jpadilla pyjwt |
|
| Vendors & Products |
Jpadilla
Jpadilla pyjwt |
Thu, 28 May 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 28 May 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | PyJWT is a JSON Web Token implementation in Python. From 2.9.0 to 2.12.1, there is a verifier-side algorithm allow-list bypass when jwt.decode() or jwt.decode_complete() are called with a PyJWK key. The token header alg is checked against the caller-supplied algorithms allow-list, but signature verification is performed with the algorithm bound to the PyJWK object instead of the header algorithm. An attacker who controls a registered JWK/JWKS private key can sign with a disallowed algorithm, advertise an allowed algorithm in the JWT header, and still be accepted. The issue affects the documented PyJWKClient.get_signing_key_from_jwt(...) flow. This vulnerability is fixed in 2.13.0. | |
| Title | PyJWT: Algorithm allow-list bypass when decoding with `PyJWK` / `PyJWKClient` keys | |
| Weaknesses | CWE-347 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-28T15:27:49.780Z
Reserved: 2026-05-21T16:18:10.619Z
Link: CVE-2026-48523
Updated: 2026-05-28T15:27:32.358Z
Status : Analyzed
Published: 2026-05-28T16:16:29.280
Modified: 2026-06-01T17:44:48.617
Link: CVE-2026-48523
OpenCVE Enrichment
Updated: 2026-05-28T17:45:22Z
Github GHSA