CVE-2025-15104
Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF
Vexday Risk Score
13Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 6.9EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
16 ene 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
Nu Html Checker (validator.nu) contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal resources, including localhost services. While the validator implements hostname-based protections to block direct access to localhost and 127.0.0.1, these controls can be bypassed using DNS rebinding techniques or domains that resolve to loopback addresses.This issue affects The Nu Html Checker (vnu): latest (commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd).
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
Productos afectados
The Nu Html Checker · The Nu Html Checker¿Quieres saber si tu infraestructura está expuesta a esto?
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