Highlights
Arbitrary File Access: 1 prior fix. Scrutinize any change in this area.
oauth2client/appengine.py: most-fixed (1 issue). Treat as high-risk during review.
2 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.
Arbitrary File Access: 1 historical fix(es) link oauth2client/file.py to Arbitrary File Access.
Signature Verification Bypass: 1 historical fix(es) link oauth2client/xsrfutil.py to Signature Verification Bypass.
Cross-Site Scripting: 1 historical fix(es) link oauth2client/appengine.py to Cross-Site Scripting.