Critical severity9.1NVD Advisory· Published Jun 23, 2026· Updated Jun 23, 2026
CVE-2026-9733
CVE-2026-9733
Description
Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter.
When no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, including the epoch time (which is leaked via the HTTP Date header) and a call to Perl's built-in rand function.
A predictable state allows an attacker to hijack another user's session through cross site request forgery (CSRF).
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Affected products
1- Range: <=0.17
Patches
Vulnerability mechanics
References
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