PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP private JWK supplies non-corresponding x and d components. As a result, identity derived from x can differ from operations performed with d. Consequently, if an integration also accepts private key parameters from a proof header without rejecting them, an attacker may use a stolen sender-constrained token without the legitimate private key. This issue is fixed in version 2.15.0.
Metrics
Affected Vendors & Products
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History
Tue, 06 Oct 2026 18:30:00 +0000
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Pyjwt Project
Pyjwt Project pyjwt |
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| CPEs | cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Pyjwt Project
Pyjwt Project pyjwt |
Tue, 29 Sep 2026 14:30:00 +0000
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ssvc
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Tue, 29 Sep 2026 13:15:00 +0000
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| Weaknesses | CWE-347 | |
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threat_severity
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threat_severity
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Mon, 28 Sep 2026 23:15:00 +0000
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Jpadilla
Jpadilla pyjwt |
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| Vendors & Products |
Jpadilla
Jpadilla pyjwt |
Mon, 28 Sep 2026 21:00:00 +0000
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| Description | PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP private JWK supplies non-corresponding x and d components. As a result, identity derived from x can differ from operations performed with d. Consequently, if an integration also accepts private key parameters from a proof header without rejecting them, an attacker may use a stolen sender-constrained token without the legitimate private key. This issue is fixed in version 2.15.0. | |
| Title | PyJWT accepts inconsistent OKP x/d JWKs, causing public/private key identity confusion | |
| Weaknesses | CWE-345 CWE-348 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-28T20:46:33.169Z
Updated: 2026-09-29T13:56:09.869Z
Reserved: 2026-09-28T20:11:16.658Z
Link: CVE-2026-102275
Updated: 2026-09-29T13:55:46.936Z
Status : Analyzed
Published: 2026-09-28T21:17:15.857
Modified: 2026-10-06T18:17:51.113
Link: CVE-2026-102275