CVE-2026-21859: axllent mailpit

csirt@kutim:~/threat-intel/cve/CVE-2026-21859

CVSS 5.3 · Medium EPSS 0,81%

Kerentanan Server-Side Request Forgery (SSRF) pada axllent mailpit. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 8 Januari 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 5.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-918: Server-Side Request Forgery (SSRF)
EPSS (30 hari): 0,81% peluang dieksploitasi; lebih tinggi dari 55,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
axllent	mailpit	Semua versi sebelum 1.28.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/axllent/mailpit/security/advisories/GHSA-8v65-47jx-7mfr exploit · advisory vendor
https://github.com/axllent/mailpit/commit/3b9b470c093b3d20b7d751722c1c24f3eed2e19d patch

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.