Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-102267

CVE-2026-102267CRITICAL

jpadilla pyjwt — PyJWT: PyJWKClient follows redirects when fetching JWKS

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  N    9.1   .0016    4.3     —

AFFECTED
  Product  Versions    Fixed
  pyjwt    < 2.14.0 –  —

TIMELINE
  Sep 28  Reserved by GitHub_M
  Sep 28  Published (CNA: GitHub_M)
  Oct 7   RESCORED — CVE-2026-102267 (jpadilla pyjwt). CVSS 7.4 → 9.1 (NVD).

CWE-200, CWE-345, CWE-918 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

Description

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT PyJWKClient is affected because redirect destinations are not revalidated against the JWKS trust boundary. This occurs when a configured trusted JWKS endpoint returns an attacker-influenced redirect. As a result, PyJWKClient follows the redirect and consumes the redirected response as key material. Consequently, forwarded credentials may be disclosed or verification keys may be substituted. This issue is fixed in version 2.14.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 28, 2026	Reserved	Reserved by GitHub_M
September 28, 2026	Published	Published (CNA: GitHub_M)
October 7, 2026	RESCORED	RESCORED — CVE-2026-102267 (jpadilla pyjwt). CVSS 7.4 → 9.1 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
jpadilla	pyjwt	—	< 2.14.0	—

Weaknesses

CWE-200 · CWE-345 · CWE-918

References (3)

https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56 [Patch]
https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 [Product, Release Notes]
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj [Patch, Vendor Advisory]

Authoritative record: CVE-2026-102267 at cve.org

Vendors: jpadilla

Weaknesses: CWE-200 · CWE-345 · CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-102267 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.