Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
twilio/twilio-php
main @ af9017a
9
Fixes
0
CVEs
HIGH
Peak severity
Highlights
Auth Bypass: 3 prior fixes. Scrutinize any change in this area.
Services/Twilio.php: most-fixed (2 issues). 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.
Auth Bypass: Incomplete signature verification of webhook payloads allowed attackers to bypass authentication when raw, non-form-encoded request bodies were used. The fix introduced explicit SHA256 body hash validation to guarantee request integrity.
Broken Cryptography: The internal HTTP client (TinyHttp) initially lacked proper peer verification against a trusted Certificate Authority bundle. This created a high risk of Man-in-the-Middle (MitM) attacks during API requests, which was resolved by explicitly bundling and configuring a trusted CA certificate.
Timing Attack: The use of non-constant-time comparison loops and standard operators (!=) in signature and token verification exposed the library to timing attacks. Developers must always employ hash_equals or equivalent constant-time comparison functions for verification steps.