CVE-2026-45755
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-45755, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-07-14
Last updated on: 2026-07-14
Assigner: GitHub, Inc.
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| symfony | symfony | From 7.2 (inc) to 7.4.12 (exc) |
| symfony | symfony | From 8.0 (inc) to 8.0.12 (exc) |
| symfony | mailtrap_mailer | From 7.2 (inc) to 7.4.12 (exc) |
| symfony | mailtrap_mailer | From 8.0 (inc) to 8.0.12 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
| CWE-347 | The product does not verify, or incorrectly verifies, the cryptographic signature for data. |
