PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| jpadilla | pyjwt | affected |
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| Source | ID | Title |
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Github GHSA |
GHSA-xgmm-8j9v-c9wx | PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.427% probability within 30 days)
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threat_severity
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threat_severity
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Pyjwt Project
Pyjwt Project pyjwt |
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| CPEs | cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:* | |
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Pyjwt Project
Pyjwt Project pyjwt |
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ssvc
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Jpadilla
Jpadilla pyjwt |
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Jpadilla
Jpadilla pyjwt |
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| Description | PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0. | |
| Title | PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed | |
| Weaknesses | CWE-287 CWE-347 |
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cvssV3_1
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