/ 
OIDC-Lite-0.01
/ OIDC::Lite::Server::Error
Security Advisories (1)
CVE-2026-13089 (2026-07-22)

OIDC::Lite versions through 0.12.1 for Perl allow ID Token signature verification bypass via a token-controlled algorithm allowlist in verify. When the caller does not pin an algorithm, OIDC::Lite::Model::IDToken::verify sets $self->alg($self->header->{alg}) from the token's own header and then calls decode_jwt(token, key, 1, [$self->alg]), handing JSON::WebToken an accepted-algorithm allowlist taken from the untrusted token. A token with alg=none yields ['none'], so decode_jwt returns the claims with no signature check, and a token with alg=HS256 is verified with the RP's RSA public key as the HMAC secret (RS to HS confusion). The ID Token is the OpenID Connect authentication assertion delivered to the Relying Party. Any caller that verifies an ID Token through the unpinned load(token)->verify path, or load(token, key) with only the key pinned, accepts a forged token carrying attacker-chosen claims such as sub and is authenticated as any user. Passing an explicit algorithm so $self->alg is already set bypasses the header-derived allowlist and is not affected. Note that the latest version uploaded to CPAN is 0.10. Later versions are available in the git repository.

NAME

OIDC::Lite::Server::Error - OpenID Connect server errors (for Dynamic Client Registration)

SYNOPSIS

# At registration-endpoint

try {


} catch {

    if ($_->isa("OAuth::Lite2::Server::Error")) {

        my %error_params = ( error => $_->type );
        $error_params{error_description} = $_->description if $_->description;
        $error_params{scope} = $_->scope if $_->scope;

        $req->new_response($_->code,
            [ "Content-Type" => $formatter->type, "Cache-Control" => "no-store" ],
            [ $formatter->format(\%error_params) ],
        );

    } else {

        # rethrow
        die $_;

    }

};

DESCRIPTION

OAuth 2.0 error classes.

See http://openid.net/specs/openid-connect-registration-1_0-12.html#anchor7,

METHODS

ERRORS

OIDC::Lite::Server::Error::InvalidOperation
OIDC::Lite::Server::Error::InvalidClientId
OIDC::Lite::Server::Error::InvalidClientSecret
OIDC::Lite::Server::Error::InvalidRedirectUri
OIDC::Lite::Server::Error::InvalidConfigurationParameter

AUTHOR

Ryo Ito, <ritou.06@gmail.com>

COPYRIGHT AND LICENSE

Copyright (C) 2012 by Lyo Kato

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.