PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when decoding.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NFedora Project Fedora
OSFedoraproject3536Pyjwt Project Pyjwt
APPPyjwt Project1.5.0 – 2.4.0 (bez)
Related vulnerabilities
PHP CGI argument injection – RCE na Windows przez mechanizm Best-Fit
Type Confusion w V8 (Google Chrome) — RCE przez spreparowaną stronę HTML
Type Confusion w silniku V8 Chrome — zdalne wykonanie kodu (RCE)
Use-after-free w Google Chrome Visuals umożliwiający ucieczkę z sandbox
Integer overflow w Skia w Google Chrome — sandbox escape