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CVE-2026-47212GHSA-55RJ-X2VC-4WHQ

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.4.40, 7.4.12, 8.0.12
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • symfony symfony

    From 6.4.0 · fixed in 6.4.40; From 7.0.0-BETA1 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12

  • symfony twilio-notifier

    From 6.4.0 · fixed in 6.4.40; From 7.0.0-BETA1 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12

  • symfony/symfonyPackagist

    From 6.4.0 · fixed in 6.4.40

  • symfony/symfonyPackagist

    From 7.0.0 · fixed in 7.4.12

  • symfony/symfonyPackagist

    From 8.0.0 · fixed in 8.0.12

  • symfony/twilio-notifierPackagist

    From 6.4.0 · fixed in 6.4.40

  • symfony/twilio-notifierPackagist

    From 7.0.0 · fixed in 7.4.12

  • symfony/twilio-notifierPackagist

    From 8.0.0 · fixed in 8.0.12

References 5

GitHub · symfony/symfony