Security context

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

anymail/django-anymail

              main @ 8a4cc24
            

Fixes

CVEs

CRITICAL

Peak severity

50.0%

Coverage

Highlights

Auth Bypass: 1 prior fix. Scrutinize any change in this area.

anymail/inbound.py: most-fixed (1 issue). Treat as high-risk during review.

1 high-severity fix 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: Insecure cryptographic signature validation and failure to correctly enforce basic authentication using WEBHOOK_SECRET allows attackers to forge tracking webhooks from Unisender Go. This risks arbitrary event injection if webhook secrets are improperly checked or exposed.

Denial of Service: Processing attachment filenames containing embedded carriage return or line feed characters causes a ValueError during header generation, crashing the inbound parser. Attackers sending malformed emails can systematically trigger unhandled exceptions to disrupt email processing.