medium5.3
CVE-2026-47212
Symfony: Twilio SMS Notifier allows unauthenticated webhook injection due to missing X-Twilio-Signature verification
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | symfony/symfony | >= 6.4.0, < 6.4.40 | 6.4.40 |
| composer | symfony/twilio-notifier | >= 6.4.0, < 6.4.40 | 6.4.40 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sensiolabs | Symfony | from 6.4.0 before 6.4.40 from 7.0.0 before 7.4.12 from 8.0.0 before 8.0.12 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-55rj-x2vc-4whq
- https://github.com/symfony/symfony/security/advisories/GHSA-55rj-x2vc-4whq
- https://github.com/symfony/symfony/commit/8545fb2af6c07dfb5ef0fc8d9bccf86db2c94356
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-47212.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/twilio-notifier/CVE-2026-47212.yaml
- https://symfony.com/cve-2026-47212
- https://github.com/symfony/symfony/releases/tag/v6.4.40
- https://github.com/symfony/symfony/releases/tag/v7.4.12
- https://github.com/symfony/symfony/releases/tag/v8.0.12