CVE-2026-90990

Katalog CVE

CVSS 5.3 · Medium EPSS 0,42%

Kerentanan Improper Neutralization of CRLF Sequences ('CRLF Injection'). Skor CVSS 4.0 5.3 (Medium) menurut checkmk.com.

Deskripsi (NVD)

Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.

Rincian

Terbit di NVD

22 September 2026

Terakhir diubah

22 September 2026

Status NVD

Deferred

CVSS 4.0

5.3 (Medium), sumber checkmk.com
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

EPSS (30 hari)

0,42% peluang dieksploitasi; lebih tinggi dari 34,6% 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://checkmk.com/werk/19604