Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

symfony/security-guard

              5.4 @ f3da3db
            

Fixes

CVEs

CRITICAL

Peak severity

Highlights

Session Fixation: 2 prior fixes. Scrutinize any change in this area.

Firewall/GuardAuthenticationListener.php: most-fixed (1 issue). Treat as high-risk during review.

1 high-severity fix in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Insecure Deserialization: Unrestricted deserialization of parent data during token restoration can lead to PHP object injection, potentially triggering remote code execution if populating unvalidated serialized payloads.

Session Fixation: Failing to trigger or properly delegate session migration upon successful Guard authentication allows session hijacking where an attacker pre-determines a victim's session ID.

Information Disclosure: Exposing granular user-not-found or account status exceptions allows remote attackers to systematically enumerate valid usernames registered within the application.