CVE-2026-21859 (GCVE-0-2026-21859)
Vulnerability from cvelistv5
Published
2026-01-07 23:24
Modified
2026-01-08 19:23
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Mailpit is an email testing tool and API for developers. Versions 1.28.0 and below have a Server-Side Request Forgery (SSRF) vulnerability in the /proxy endpoint, allowing attackers to make requests to internal network resources. The /proxy endpoint validates http:// and https:// schemes, but it does not block internal IP addresses, enabling attackers to access internal services and APIs. This vulnerability is limited to HTTP GET requests with minimal headers. The issue is fixed in version 1.28.1.
Impacted products
Vendor Product Version
axllent mailpit Version: < 1.28.1
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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