Riskcovery

CVE-2026-47212

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

State
Published
Severity
6.9 Medium
Published
Jul 14, 2026
Updated
Jul 15, 2026
Reserved
May 18, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.06.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-306 Missing Authentication for Critical Function
  • CWE-347 Improper Verification of Cryptographic Signature

Affected Products

ProductVersions
symfonysymfony
  • >= 6.4.0, < 6.4.40Affected
  • >= 7.0.0-BETA1, < 7.4.12Affected
  • >= 8.0.0-BETA1, < 8.0.12Affected
twilio-notifiersymfony
  • >= 6.4.0, < 6.4.40Affected
  • >= 7.0.0-BETA1, < 7.4.12Affected
  • >= 8.0.0-BETA1, < 8.0.12Affected

References

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