Perl Crypt::JWT prior to 0.023 is affected by: Incorrect Access Control. The impact is: allow attackers to bypass authentication by providing a token by crafting with hmac(). The component is: JWT.pm, line 614. The attack vector is: network connectivity. The fixed version is: after commit b98a59b42ded9f9e51b2560410106207c2152d6c.

• https://github.com/DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6c
• https://www.openwall.com/lists/oss-security/2018/09/07/1

perl-CRYPT-JWT 0.022 and earlier is affected by: Incorrect Access Control. The impact is: bypass authentication. The component is: JWT.pm for JWT security token, line 614 in _decode_jws(). The attack vector is: network connectivity(crafting user-controlled input to bypass authentication). The fixed version is: 0.023.

• https://github.com/DCIT/perl-Crypt-JWT/issues/3#issuecomment-417947483