Description

Mailpit is an email testing tool and API for developers. Versions prior to 1.28.3 are vulnerable to Server-Side Request Forgery (SSRF) via HTML Check CSS Download. The HTML Check feature (`/api/v1/message/{ID}/html-check`) is designed to analyze HTML emails for compatibility. During this process, the `inlineRemoteCSS()` function automatically downloads CSS files from external `<link rel="stylesheet" href="...">` tags to inline them for testing. Version 1.28.3 fixes the issue.

INFO

Published Date :

2026-01-19T19:01:38.163Z

Last Modified :

2026-01-20T20:05:35.862Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23845 vulnerability.

Vendors Products
Axllent
  • Mailpit
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23845.

URL Resource
https://github.com/axllent/mailpit/commit/1679a0aba592ebc8487a996d37fea8318c984dfe cve-icon cve-icon
https://github.com/axllent/mailpit/releases/tag/v1.28.3 cve-icon cve-icon
https://github.com/axllent/mailpit/security/advisories/GHSA-6jxm-fv7w-rw5j cve-icon cve-icon
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CVSS Vulnerability Scoring System

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