Medium 6.5Published Sep 28, 2026

CVE-2026-102275PyJWT accepts inconsistent OKP x/d JWKs, causing public/private key identity confusion

Updated under an hour ago (2026-10-19 10:00 UTC)

Does this affect you?

It affects jpadilla pyjwt and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.14%, higher than 3% of scored CVEs.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for jpadilla pyjwt

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Weakness (CWE): CWE-345, CWE-348
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.14% (percentile 3)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Sep 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

jpadilla pyjwt jpadilla:pyjwt (from the name)	from 2.1.0, < 2.15.0	CNA record
pyjwt_project pyjwt pyjwt_project:pyjwt	from 2.1.0 before 2.15.0	NVD

References

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-x33g-cr3x-6449x-refsource-confirm, exploit, vendor-advisory
https://github.com/jpadilla/pyjwt/commit/3cd9ceec33ced359decbad75b413ad668ae6332cx-refsource-misc, patch
https://github.com/jpadilla/pyjwt/releases/tag/2.15.0x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.