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CVE details

CVE-2026-102275

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.

Score
6.5 medium
Published
2026-09-28
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
www/py-pyjwtpy312-pyjwt2.14.0unaddressedsunpoet@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>py312-pyjwt</name>
	<range><lt>2.15.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-102275</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-102275</url>
    </references>
    <dates>
      <discovery>2026-09-28</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>