CVE-2026-102267PyJWT: PyJWKClient follows redirects when fetching JWKS
Updated under an hour ago ()
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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 0.16%, higher than 4% of scored CVEs.
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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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-200, CWE-345, CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.16% (percentile 4)
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jpadilla pyjwt jpadilla:pyjwt (from the name) | before 2.14.0 | CNA record |
pyjwt_project pyjwt pyjwt_project:pyjwt | before 2.14.0 | NVD |
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgjx-refsource-confirm, patch, vendor-advisory
- https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56x-refsource-misc, patch
- https://github.com/jpadilla/pyjwt/releases/tag/2.14.0x-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.