Security context

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

apache/hadoop
trunk @ abbc78d
249
Fixes
0
CVEs
CRITICAL
Peak severity
52.6%
Coverage
Highlights
Auth Bypass: 115 prior fixes. Scrutinize any change in this area.
hadoop-project/pom.xml: most-fixed (41 issues). Treat as high-risk during review.
213 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: Hundreds of fixes address authentication bypasses via incorrect user identity propagation, proxy-user handling, and token validation; these are the highest-frequency and highest-impact class.
Authorization Bypass: Missing or incorrectly ordered permission/ACL checks on rename, content summary, setOwner, and Azure operations allow unauthorized access; symlink and sticky-bit edge cases also bypass checks.
Dependency Vulnerability: Recurring CVEs in Netty, Jetty, Jackson, BouncyCastle, lz4, and other libraries require constant upgrades; deserialization allowlists (Avro, Kafka) are critical for RCE prevention.