Security context

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

symfony/mercure

              main @ 3ba1d19
            

Fixes

CVEs

MEDIUM

Peak severity

Highlights

Auth Bypass: 1 prior fix. Scrutinize any change in this area.

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

0 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.

Auth Bypass: Inadequate extraction and validation of the second-level domain (SLD) from request hosts can allow authorization cookies to be set for untrusted or overly broad parent domains, leading to unauthorized access and session hijacking across subdomains.