CVE-2026-102274

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Source
https://cve.org/CVERecord?id=CVE-2026-102274
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102274.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102274
Aliases
Downstream
CGA (125)
CLSA (1)
DEBIAN (1)
ECHO (1)
MINI (12)
UBUNTU (1)
Published
2026-09-28T20:42:28Z
Modified
2026-09-30T11:30:31Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
PyJWT: Malformed RSA JWK aborts parsing of an entire JWK Set
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-755"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102274.json"
}
References

Affected packages

Git / github.com/jpadilla/pyjwt

Affected ranges

Type
GIT
Repo
https://github.com/jpadilla/pyjwt
Events
Introduced
868cf4ab2ca5a0a39da40e5a14dd740b203662b2
Fixed
8915570a0bfda9f0ff0e34e7fb09bdb9d71580cf
Fixed
c6fe464b356ff4b1ebc9ba62172d331a40aa27df
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "2.9.0"
        },
        {
            "fixed":  "2.14.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

2.*
2.10.0
2.10.1
2.11.0
2.12.0
2.12.1
2.13.0
2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102274.json"