Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
AbstractHl7OverHttpDecoder: most-fixed (1 issue). Treat as high-risk during review.
3 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.
XXE (XML External Entity): XML parsing was configured with external entity and DTD resolution enabled, allowing XXE attacks that could read local files or perform SSRF.
Auth Bypass: The decoder accepted messages without an HL7 signature when a signer was configured, enabling attackers to forge or tamper with messages and bypass authentication.
Dependency Vulnerability: Outdated Bouncy Castle, Spring, and JUnit versions contained known vulnerabilities, exposing the project to a range of exploits.