HIGH🇬🇧 English

CVE-2026-43634

CVSS 8.7v4.0pub. 2026-05-19

HestiaCP versions 1.2.0 through 1.9.4 contain an IP spoofing vulnerability that allows unauthenticated remote attackers to bypass authentication security controls by supplying an arbitrary IP address in the CF-Connecting-IP HTTP header without verifying the request originated from Cloudflare's network. Attackers can exploit this to circumvent fail2ban brute-force protection, bypass per-user IP allowlists, and poison authentication audit logs by spoofing trusted IP addresses on each request.

oryginał EN
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/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
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ZWERYFIKUJ U PRODUCENTA
Brak jednoznacznych danych o patchu. Sprawdź referencje od producenta.
Tagi
Auth Bypass
CWE
Referencje
CVE-2026-43634 — HIGH 8.7 | CVEbaza.pl