CVE-2026-55559 — Katalog CVE

csirt@kutim:~/threat-intel/cve/CVE-2026-55559

CVSS 9.8 · Critical EPSS 0,78%

Kerentanan Improper Control of Generation of Code ('Code Injection'). Skor CVSS 3.1 9.8 (Critical) menurut github.com.

Deskripsi (NVD)

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs inserts templateArgs from POST /api/instances and PATCH /api/instances/{instance} into YAML through VarStatement.append in yamcs-core/src/main/java/org/yamcs/templating/VarStatement.java without YAML-context escaping. The rendered configuration is parsed by YamcsServer.createInstance and loaded by YamcsServerInstance, allowing an attacker to inject a services entry for org.yamcs.ProcessRunner. Deployments without security.yaml expose the operation through the guest superuser, while secured deployments require SystemPrivilege.CreateInstances. Successful exploitation executes commands as the Yamcs service account. This issue is fixed in versions 5.12.8 and 5.13.2.

Rincian

Terbit di NVD: 28 Agustus 2026
Terakhir diubah: 8 September 2026
Status NVD: Awaiting Analysis
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-94: Improper Control of Generation of Code ('Code Injection')
CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
EPSS (30 hari): 0,78% peluang dieksploitasi; lebih tinggi dari 54,8% 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

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.