Security context

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

symfony/rate-limiter

              8.2 @ dd8f482
            

Fixes

CVEs

HIGH

Peak severity

Highlights

Insecure Deserialization: 2 prior fixes. Scrutinize any change in this area.

Symfony/Component/RateLimiter: most-fixed (2 issues). Treat as high-risk during review.

4 high-severity fixes 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: Attackers can leverage PHP gadget chains during the unserialization of rate-limiter policy states to execute arbitrary remote code. Safe handling of deserialized properties is critical across all policy classes.

Insecure Deserialization: The deserialization of Stringable objects in CalendarAlignedWindow can trigger unintended magic method execution, compromising the runtime environment. Strict type checks on array keys are required.

Auth Bypass: An integer underflow vulnerability when consuming negative tokens allows malicious actors to completely bypass configured rate limits, defeating the component's primary protective function.