Security context

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

azuread/microsoft-authentication-library-for-python

              dev @ 55dd09f
            

Fixes

CVEs

HIGH

Peak severity

77.8%

Coverage

Highlights

Auth Bypass: 4 prior fixes. Scrutinize any change in this area.

msal/authority.py: most-fixed (2 issues). Treat as high-risk during review.

6 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: Flawed domain validation and incomplete issuer host checks in authority verification paths allow attackers to bypass OIDC issuer restrictions using lookalike domains or unvalidated endpoints.

Path Traversal: The library failed to restrict local path operations, enabling arbitrary local file reads when processing the Azure Arc challenge secret file path.

SSRF: Unvalidated regional variables and overridable environment parameters allowed construction of malicious external network endpoints, exposing the library to SSRF.