CVE-2026-90937Patch

LOWCVSS 9.4 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

froxlor versions before 2.2.5 fail to validate newline characters in subdomain redirect URLs, allowing authenticated customers to inject arbitrary nginx or Apache configuration directives. Attackers can supply URLs containing literal newlines that are written verbatim into vhost config files during cron rebuild, enabling web server configuration corruption, denial of service, or hijacking of HTTP responses across hosted domains.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-93

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-15: 1Patch / Workaround · 2026-09-15: 1Technical Details · 2026-09-15: 109-15
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Rıdvan Yağlı@ridvanyagli
    Patch

    🔴 Froxlor'da Kritik Configuration Injection Açığı! Froxlor adlı sunucu yönetim panelinde (hosting kontrol panel) şu an yamalanmış olan ancak eski sürümleri etkileyen güvenlik açığı yayınlandı. CVE-2026-90937 — Froxlor 2.2.5 öncesi sürümlerde, subdomain redirect URL'lerinde newline karakterlerinin yeterince filtrelenmemesi nedeniyle Nginx/Apache yapılandırmasına keyfi direktifler enjekte edilebiliyor. 👤 Saldırı için authenticated düşük yetkili müşteri hesabı yeterli. ⚠️ Başarılı istismar; web sunucusu yapılandırmasının bozulması, DoS, HTTP response hijacking ve hosted domainler üzerinde etkiye yol açabiliyor. Froxlor'un advisory'sinde hassas dosyaların ve SSL private key'lerin okunabilmesine yönelik senaryolar da belirtiliyor. CVSS: 9.9 — Kritik Etkilenen sürümler: Froxlor 2.2.5 öncesi Çözüm: Güncel Froxlor sürümüne yükseltin. İlgili advisory: https://github.com/froxlor/froxlor/security/advisories/GHSA-c3p2-mj7v-5mrc

    Post summary

    The text discloses a critical Configuration Injection vulnerability (CVE-2026-90937) in Froxlor <2.2.5 with detailed technical root causes and high-severity impacts (CVSS 9.9), explicitly advising users to upgrade to the latest patched version as the primary remediation.

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