Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
expressjs/session
master @ 2c9512f
8
Fixes
0
CVEs
HIGH
Peak severity
Highlights
Denial of Service: 4 prior fixes. Scrutinize any change in this area.
index.js: most-fixed (6 issues). 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.
Denial of Service: Uncaught exceptions and type mismatches (such as empty URLs, non-string session IDs, and null responses) consistently trigger unhandled crashes in index.js, making it the most vulnerable surface for denial of service.
Auth Bypass: Weaknesses in session cookie verification, such as accepting missing or invalid cryptographic signatures, directly allow session hijacking.
Insecure Cryptography: The use of non-cryptographically secure pseudo-random generators (like uid2) for creating session identifiers creates a risk of session ID prediction and hijacking.