CVE-2026-47212

MEDIUM6.9

Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection

Published Jul 14, 2026

Modified 6 days ago

Details

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, TwilioRequestParser::doParse() received the configured webhook secret but ignored the X-Twilio-Signature HMAC header, allowing unauthenticated POST requests to inject forged Twilio status payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

References

WEB

https://github.com/symfony/symfony/commit/8545fb2af6c07dfb5ef0fc8d9bccf86db2c94356

WEB

https://github.com/symfony/symfony/releases/tag/v6.4.40

WEB

https://github.com/symfony/symfony/releases/tag/v7.4.12

WEB

https://github.com/symfony/symfony/releases/tag/v8.0.12

WEB

https://github.com/symfony/symfony/security/advisories/GHSA-55rj-x2vc-4whq

ADVISORY