CVE-2026-85751

Katalog CVE

CVSS 9.8 · Critical EPSS 0,56%

Kerentanan Authentication Bypass by Spoofing. Skor CVSS 3.1 9.8 (Critical) menurut github.com.

Deskripsi (NVD)

Mailu is a mail server distributed as a set of Docker images. From Mailu 2.0 until 2024.06.55 and prior to Mailu helm-charts 2.7.3, deployments with PROXY_AUTH_WHITELIST configured but REAL_IP_HEADER unset trusted a client-controlled X-Forwarded-By header for header-based proxy authentication. The proxy_hide_header directive in the nginx template at core/nginx/conf/proxy.conf hid the header from upstream responses but did not overwrite the incoming request value in this configuration. An unauthenticated remote attacker could therefore spoof the trusted proxy identity and bypass authentication. This issue is fixed in Mailu 2024.06.55 and Mailu helm-charts 2.7.3.

Rincian

Terbit di NVD

21 September 2026

Terakhir diubah

24 September 2026

Status NVD

Deferred

CVSS 3.1

9.8 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-290: Authentication Bypass by Spoofing
CWE-807: Reliance on Untrusted Inputs in a Security Decision

EPSS (30 hari)

0,56% peluang dieksploitasi; lebih tinggi dari 44,9% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/Mailu/Mailu/commit/dffa97cbd889ab208246372ce9c86e99abb27ae9
• https://github.com/Mailu/Mailu/commit/ff4003d045753013470945336448dbd790cac778
• https://github.com/Mailu/Mailu/pull/4070
• https://github.com/Mailu/Mailu/pull/4071
• https://github.com/Mailu/Mailu/releases/tag/2024.06.55
• https://github.com/Mailu/Mailu/security/advisories/GHSA-rfhj-4wcq-74xg