DEBIAN-CVE-2026-102268
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-102268
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102268.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-102268
- Upstream
- Published
- 2026-09-28T21:17:14Z
- Modified
- 2026-09-30T09:00:10Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, is_pem_format in jwt/utils.py is affected because is_pem_format does not recognize every PEM representation accepted by the cryptography loader. This occurs when an application mixes HMAC and asymmetric algorithms and supplies a mutated public-key PEM as raw key bytes. As a result, HMACAlgorithm.prepare_key treats the unrecognized asymmetric public key as an HMAC secret. Consequently, an attacker who knows the public key can forge authenticated HMAC tokens. This issue is fixed in version 2.14.0.
- References
Affected packages
Debian:12 / pyjwt
Package
- Name
- pyjwt
- Purl
- pkg:deb/debian/pyjwt?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / pyjwt
Package
- Name
- pyjwt
- Purl
- pkg:deb/debian/pyjwt?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / pyjwt
Package
- Name
- pyjwt
- Purl
- pkg:deb/debian/pyjwt?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected