Security context

Highlights

Path Traversal: 5 prior fixes. Scrutinize any change in this area.

src/file_upload.rs: most-fixed (4 issues). Treat as high-risk during review.

8 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

Path Traversal: Repeated path validation failures in the file upload module allowed attackers to escape the server root directory, write to arbitrary locations, and create directories outside the designated root. Developers must consistently enforce path canonicalization paired with strict prefix checks before executing filesystem operations.

Auth Bypass: Logic inversions and failure to properly structure authorization headers compromised basic access controls. It is critical to ensure proper logic mapping and robust response propagation across all unauthorized code branches to prevent arbitrary access.

Timing Attack: Direct string comparison of password hashes exposed authentication routes to timing side-channel attacks. Safe binary comparisons of raw byte vectors must be utilized when verifying secrets.