CVE-2026-21859

MEDIUM

5.8

Description

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.

Details CVE

Score CVSS v3.15.8

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/8/2026

Derniere modification2/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

axllent:mailpit

Faiblesses (CWE)

CWE-918

References

https://github.com/axllent/mailpit/commit/3b9b470c093b3d20b7d751722c1c24f3eed2e19d(security-advisories@github.com)

https://github.com/axllent/mailpit/security/advisories/GHSA-8v65-47jx-7mfr(security-advisories@github.com)

https://github.com/axllent/mailpit/security/advisories/GHSA-8v65-47jx-7mfr(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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