Security context

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

brianmario/mysql2

              master @ 85c5549
            

Fixes

CVEs

MEDIUM

Peak severity

Highlights

Broken Cryptography: 1 prior fix. Scrutinize any change in this area.

ext/mysql2/client.c: 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.

Broken Cryptography: Insecure default SSL configurations or missing identity validation flags (such as MYSQL_OPT_SSL_VERIFY_SERVER_CERT) allow MitM attacks when communicating with database servers. Developers must ensure transport validation is strictly configured.

Out-of-bounds Read: Processing untrusted server-returned field metadata containing large charset numbers can lead to out-of-bounds array reads in the C extension, resulting in application crashes or info disclosure. Strict bounds checks are needed before using index values.