DEBIAN-CVE-2025-15104

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...

Linux Distros Unpatched Vulnerability : CVE-2025-15104

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Nu Html Checker validator.nu contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal...

CVE-2025-15104

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...

Nu Html Checker (vnu) contains a Server-Side Request Forgery (SSRF) vulnerability

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...

GHSA-FCCG-7W3P-W66F Nu Html Checker (vnu) contains a Server-Side Request Forgery (SSRF) vulnerability

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...

CVE-2025-15104

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...

CVE-2025-15104

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...

CVE-2025-15104

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...

CVE-2025-15104

Nu Html Checker (validator.nu) — SSRF via restriction bypass in vnu (latest commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd). The issue allows remote attackers to induce the server to make arbitrary HTTP/HTTPS requests to internal resources, including localhost services. Protective hostname check...

CVE-2025-15104

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...

CVE-2025-15104 Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF

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...

EUVD-2026-2919

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...

CVE-2025-15104 Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF

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...

The Nu Html Checker security vulnerability

The Nu Html Checker is an open-source tool developed by The Nu Html Checker vnu that verifies whether HTML documents comply with modern web standards. The Nu Html Checker has a security vulnerability, which stems from a limitation that can be bypassed. This vulnerability could allow remote...

PT-2026-3253

Name of the Vulnerable Software and Affected Versions Nu Html Checker versions prior to commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd Description The Nu Html Checker validator.nu is susceptible to a restriction bypass that enables remote attackers to initiate arbitrary HTTP/HTTPS requests to...