https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T14:21:52.198892+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/certfr-2026-avi-0617 certfr-2026-avi-0617 — De multiples vulnérabilités ont été découvertes dans Symfony. Certaines d'entre elles permettent à un attaquant de prov… 2026-10-05T14:21:52.203745+00:00 certfr-2026-avi-0617 https://cve.radiocsirt.org/vuln/euvd-2026-336746 EUVD-2026-336746 2026-10-05T14:21:52.203789+00:00 EUVD-2026-336746 https://cve.radiocsirt.org/vuln/fkie_cve-2026-45755 fkie_cve-2026-45755 2026-10-05T14:21:52.203804+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-59f3-vp2f-mp9w GHSA-59f3-vp2f-mp9w — Symfony's Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injecti… 2026-10-05T14:21:52.203836+00:00

Affected: Packagist: symfony/mailtrap-mailer, Packagist: symfony/symfony

### Description

The Mailtrap mailer bridge ships a webhook request parser used to authenticate and decode the event callbacks Mailtrap POSTs to an application's webhook endpoint. Its `doParse(Request $request, #[\SensitiveParameter] string $secret)` method receives the configured webhook secret but never reads it; it decodes and returns the payload unconditionally, ignoring the `X-Mt-Signature` HMAC header Mailtrap sends with each request.

As a result, an application that wires up the Mailtrap webhook endpoint accepts **any** POST to that URL, even when a signing secret is configured (the recommended setup). An attacker who knows the endpoint exists can submit forged event payloads, fake delivery / bounce / open / click / spam events, leading to suppression-list corruption, delivery-metrics fraud, etc.

### Resolution

`MailtrapRequestParser::doParse()` now requires and verifies the `X-Mt-Signature` header, an HMAC-SHA256 of the raw request body keyed with the configured secret, before decoding the payload, using a constant-time comparison.

When no secret is configured the behaviour is unchanged: signature verification remains opt-in, but it is now actually enforced once opted in.

The patch for this issue is available [here](https://github.com/symfony/symfony/commit/4e0467e4e182cf2e704a3d9e1bc1a6be65d52ab8) for branch 7.4.

### Credits

Symfony would like to thank Himanshu Anand for reporting the issue and Alexandre Daubois providing the fix.

 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-45755 UBUNTU-CVE-2026-45755 2026-10-05T14:21:52.203879+00:00

Affected: Ubuntu:16.04:LTS: symfony, Ubuntu:Pro:18.04:LTS: symfony, Ubuntu:Pro:20.04:LTS: symfony, Ubuntu:Pro:22.04:LTS: symfony, Ubuntu:Pro:24.04:LTS: symfony, Ubuntu:25.10: symfony, Ubuntu:26.04:LTS: symfony

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.