Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
antlr/antlr4
dev @ 7d57703
2
Fixes
0
CVEs
MEDIUM
Peak severity
50.0%
Coverage
Highlights
Dependency Vulnerability: 1 prior fix. Scrutinize any change in this area.
ParserATNSimulator.java: 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.
Privilege Escalation: Direct access to environment variables via System.getenv can bypass security manager restrictions, potentially leaking sensitive configuration or enabling privilege escalation. The fix wraps this call in doPrivileged, but other code paths may still access environment variables without proper protection.
Dependency Vulnerability: The ICU4J dependency was upgraded from 61.1 to 69.1 to address known vulnerabilities. Outdated dependencies can introduce exploitable flaws, especially in parsing libraries used for internationalization. Future dependency updates must be tracked to avoid reintroducing vulnerable versions.