CVE catalog

CVE-2026-102274

PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in

[CVE catalog]

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 28, 2026, 8:42:28 PM UTC
Updated: Sep 28, 2026, 9:17:15 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.55% · Oct 25, 2026

PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in jwt/api_jwk.py. This occurs when a JWK Set contains a malformed RSA key alongside otherwise usable keys. As a result, one malformed member aborts construction of the entire PyJWKSet. Consequently, applications can experience authentication failures or request-level denial of service. This issue is fixed in version 2.14.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	pyjwt	sid	`2.15.1-1`	fixed
Debian	pyjwt	forky	`2.15.1-1`	fixed
Debian	pyjwt	trixie	`2.10.1-2+deb13u1`	vulnerable
Debian	pyjwt	trixie-security	`2.10.1-2+deb13u1`	vulnerable
Debian	pyjwt	bookworm	`2.6.0-1+deb12u1`	vulnerable
Debian	pyjwt	bookworm-security	`2.6.0-1+deb12u1`	vulnerable
PyPI	pyjwt	Not reported	`2.14.0`	fixed
PyPI	pyjwt	Not reported	`2.14.0`	fixed
Cpe	pyjwt	Not reported	`2.14.0`	fixed
Ubuntu	pyjwt	22.04	`1.7.1-2ubuntu2`	vulnerable
Ubuntu	pyjwt	22.04	`2.1.0-1`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.1`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.2`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.3`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.4`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.5`	vulnerable
Ubuntu	pyjwt	22.04	`2.3.0-1ubuntu0.6`	fixed
Ubuntu	pyjwt	24.04	`2.7.0-1`	vulnerable
Ubuntu	pyjwt	24.04	`2.7.0-1ubuntu0.1`	vulnerable
Ubuntu	pyjwt	24.04	`2.7.0-1ubuntu0.2`	vulnerable
Ubuntu	pyjwt	24.04	`2.7.0-1ubuntu0.3`	vulnerable
Ubuntu	pyjwt	24.04	`2.7.0-1ubuntu0.4`	fixed
Ubuntu	pyjwt	26.10	`2.10.1-4ubuntu1`	vulnerable
Ubuntu	pyjwt	26.10	`2.12.1-1`	vulnerable
Ubuntu	pyjwt	26.10	`2.13.0-1`	vulnerable
Ubuntu	pyjwt	26.10	`2.13.0-1ubuntu1`	vulnerable
Ubuntu	pyjwt	26.10	`2.13.0-1ubuntu1.1`	fixed
Ubuntu	pyjwt	26.04	`2.10.1-2`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-3`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-3build1`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-4`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-4ubuntu1`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-4ubuntu1.1`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-4ubuntu1.2`	vulnerable
Ubuntu	pyjwt	26.04	`2.10.1-4ubuntu1.3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	pyjwt	source	sid	`2.14.0-1`	not yet assigned	Not reported	Not reported
Debian	pyjwt	source	forky	`2.14.0-1`	not yet assigned	Not reported	Not reported
Debian	pyjwt	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	pyjwt	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
PyPI	pyjwt	PyPI	Not reported	`2.14.0`	Not reported	GHSA-W6J9-CWV2-H6WQ	Not reported
PyPI	pyjwt	PyPI	Not reported	`2.14.0`	Not reported	PYSEC-2026-4152	Not reported
Cpe	pyjwt	cpe	Not reported	`2.14.0`	Not reported	NVD-CVE-2026-102274	Not reported
Ubuntu	pyjwt	deb	22.04	`2.3.0-1ubuntu0.6`	Not reported	UBUNTU-CVE-2026-102274	Not reported
Ubuntu	pyjwt	deb	24.04	`2.7.0-1ubuntu0.4`	Not reported	UBUNTU-CVE-2026-102274	Not reported
Ubuntu	pyjwt	deb	26.10	`2.13.0-1ubuntu1.1`	Not reported	UBUNTU-CVE-2026-102274	Not reported
Ubuntu	pyjwt	deb	26.04	`2.10.1-4ubuntu1.3`	Not reported	UBUNTU-CVE-2026-102274	Not reported

Notes

[bookworm] pyjwt: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-jwt]Affected
Source package: [pyjwt]
Details (4)
- 2.6.0-1+deb12u1 · all · bookworm
  Affected
  nvd · pyjwt · debian · bookworm; nvd · pyjwt · debian · 12
- 2.6.0-1+deb12u1 · all · bookworm
  Affected
  nvd · pyjwt · debian · bookworm; nvd · pyjwt · debian · 12
- 2.6.0-1+deb12u1 · all · bookworm-security
  Affected
  nvd · pyjwt · debian · bookworm; nvd · pyjwt · debian · 12
- 2.6.0-1+deb12u1 · all · bookworm-security
  Affected
  nvd · pyjwt · debian · bookworm; nvd · pyjwt · debian · 12

[Debian 13 (Trixie)]

[python3-jwt]Affected
Source package: [pyjwt]
Details (4)
- 2.10.1-2+deb13u1 · all · trixie
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie-security
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie-security
  Affected
  nvd · pyjwt · debian · 13
[python-jwt-doc]Affected
Source package: [pyjwt]
Details (4)
- 2.10.1-2+deb13u1 · all · trixie
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie-security
  Affected
  nvd · pyjwt · debian · 13
- 2.10.1-2+deb13u1 · all · trixie-security
  Affected
  nvd · pyjwt · debian · 13

Observed: Oct 27, 2026, 12:22:02 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]