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Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.12 and 8.0.12, MailtrapRequestParser::doParse() received the configured webhook secret but ignored the X-Mt-Signature HMAC header, allowing unauthenticated POST requests to inject forged Mailtrap delivery, bounce, open, click, or spam events. This issue is fixed in versions 7.4.12 and 8.0.12.

PUBLISHED Reserved 2026-05-13 | Published 2026-07-14 | Updated 2026-07-14 | Assigner GitHub_M




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-306: Missing Authentication for Critical Function

CWE-347: Improper Verification of Cryptographic Signature

Product status

>= 7.2.0, < 7.4.12
affected

>= 8.0.0-BETA1, < 8.0.12
affected

>= 7.2.0, < 7.4.12
affected

>= 8.0.0-BETA1, < 8.0.12
affected

References

github.com/...ymfony/security/advisories/GHSA-59f3-vp2f-mp9w

github.com/...ommit/4e0467e4e182cf2e704a3d9e1bc1a6be65d52ab8

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

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

cve.org (CVE-2026-45755)

nvd.nist.gov (CVE-2026-45755)

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