Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.13 and 8.0.13, MailomatRequestParser::validateSignature() parsed X-MOM-Webhook-Signature as algo=signature and passed the request-selected algorithm to hash_hmac(), allowing a signature algorithm downgrade instead of enforcing Mailomat's documented SHA-256 webhook signature. This issue is fixed in versions 7.4.13 and 8.0.13.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| symfony | symfony | >= 7.2.0, < 7.4.12, >= 8.0.0-BETA1, < 8.0.13 | — |
| symfony | mailomat-mailer | >= 7.2.0, < 7.4.12, >= 8.0.0-BETA1, < 8.0.13 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | symfony | 7.4.13+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | symfony | No fix yet | — |
| Ubuntu 26.04 LTS | symfony | No fix yet | — |
| Ubuntu 25.10 | symfony | No fix yet | — |
| Ubuntu 16.04 LTS | symfony | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 22.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 20.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 18.04 LTS | symfony | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symfony/mailomat-mailer | >= 7.2.0, < 7.4.13 | 7.4.13 | GHSA-rrj9-5q2j-4gvr |
| Packagist | symfony/mailomat-mailer | >= 8.0.0, < 8.0.13 | 8.0.13 | GHSA-rrj9-5q2j-4gvr |
| Packagist | symfony/symfony | >= 7.2.0, < 7.4.13 | 7.4.13 | GHSA-rrj9-5q2j-4gvr |
| Packagist | symfony/symfony | >= 8.0.0, < 8.0.13 | 8.0.13 | GHSA-rrj9-5q2j-4gvr |