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PyJWT: PyJWKClient follows redirects when fetching JWKS

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-102267

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-102267

pyjwt

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "jpadilla",
    "product": "pyjwt",
    "versions": [
      {
        "status": "affected",
        "version": "< 2.14.0"
      }
    ]
  }
]
Related CVEs
CVE-2026-102267

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#5283 · Revision 1
Added to Heist Feed
Publisher date
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