JWT.php in F21 JWT before 2.0 allows remote attackers to bypass signature verification via crafted tokens.
https://github.com/F21/jwt/commit/a327cf9052df8f9f97728ca0b5fa78a8231b79b6
http://www.securityfocus.com/bid/75021
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000073
http://jvn.jp/en/jp/JVN06120222/index.html
Source: Mitre, NVD
Published: 2015-06-05
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: Critical
EPSS: 0.01777