CVE-2026-102269

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-102269
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102269.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102269
Aliases
Downstream
AZL (1)
CGA (142)
CLEANSTART (2)
CLSA (4)
DEBIAN (1)
ECHO (1)
MINI (25)
openSUSE (2)
SUSE (2)
UBUNTU (1)
Related
openSUSE (2)
SUSE (2)
Published
2026-09-28T20:27:54Z
Modified
2026-10-20T11:14:25Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
PyJWT: Non-canonical signature segments enable raw-token revocation bypass
Details

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-180"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102269.json"
}
References

Affected packages

Git / github.com/jpadilla/pyjwt

Affected ranges

Type
GIT
Repo
https://github.com/jpadilla/pyjwt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c6fe464b356ff4b1ebc9ba62172d331a40aa27df
Fixed
e6f48401001609a8f99e71fcaf355fb895d508a8
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.14.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "e6f48401001609a8f99e71fcaf355fb895d508a8"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "2.14.0",
            "range":  [
                {
                    "fixed":  "c6fe464b356ff4b1ebc9ba62172d331a40aa27df"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.1.6
0.1.9
0.2.0
0.2.2
0.2.3
0.3.0
0.3.1
0.3.2
0.4.0
0.4.1
0.4.2
0.4.3
1.*
1.0.0
1.0.1
1.1.0
1.2.0
1.3.0
1.4.0
1.4.1
1.4.2
1.5.0
1.5.1
1.5.2
1.5.3
1.6.0
1.6.1
1.6.3
1.6.4
1.7.0
1.7.1
2.*
2.0.0
2.0.0a1
2.0.0a2
2.0.1
2.1.0
2.10.0
2.10.1
2.11.0
2.12.0
2.12.1
2.13.0
2.2.0
2.3.0
2.4.0
2.5.0
2.6.0
2.7.0
2.8.0
2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102269.json"