CVE-2026-27589: caddyserver caddy

csirt@kutim:~/threat-intel/cve/CVE-2026-27589

CVSS 6.5 · Medium EPSS 0,24%

Kerentanan Cross-Site Request Forgery (CSRF) pada caddyserver caddy. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the local caddy admin API (default listen `127.0.0.1:2019`) exposes a state-changing `POST /load` endpoint that replaces the entire running configuration. When origin enforcement is not enabled (`enforce_origin` not configured), the admin endpoint accepts cross-origin requests (e.g., from attacker-controlled web content in a victim browser) and applies an attacker-supplied JSON config. This can change the admin listener settings and alter HTTP server behavior without user intent. Version 2.11.1 contains a fix for the issue.

Rincian

Terbit di NVD: 24 Februari 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-352: Cross-Site Request Forgery (CSRF)
EPSS (30 hari): 0,24% peluang dieksploitasi; lebih tinggi dari 14,1% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
caddyserver	caddy	Semua versi sebelum 2.11.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/caddyserver/caddy/security/advisories/GHSA-879p-475x-rqh2 exploit · mitigasi · advisory vendor
https://github.com/user-attachments/files/25079820/PR_DESCRIPTION.md exploit · advisory pihak ketiga
https://github.com/user-attachments/files/25079818/poc.zip exploit
https://github.com/caddyserver/caddy/releases/tag/v2.11.1 release notes

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.