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CVE-2025-15104

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.9 · Medium · EPSS 0.5%

Published
Updated

Stack: system · node

Affected products and versions

  • the nu html checker

    Versions
    • latest - commit:23f090a11bab8d0d4e698f1ffc197a4fe226a9cd: Affected

    No fix published

  • vnu Debian:14

    Versions
    • 23.4.11+dfsg-1
    • 23.4.11+dfsg-2
    • 23.4.11+dfsg-3
    • 23.4.11+dfsg-4
    • 23.4.11+dfsg-5
    • 26.5.2.1+dfsg-1
    • 26.5.2.1+dfsg-2
    • 26.8.15.1+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nu.validator:validator Maven

    Versions
    • 15.3.10
    • 15.3.11
    • 15.3.12
    • 15.3.14
    • 15.3.28
    • 15.4.12
    • 15.6.29
    • 16.1.1
    • 16.3.3
    • 16.6.18
    • 16.6.20
    • 16.6.29
    • 17.0.0
    • 17.0.1
    • 17.1.0
    • 17.11.0
    • 17.11.1
    • 17.2.0
    • 17.2.1
    • 17.3.0
    • 17.7.0
    • 17.9.0
    • 18.11.5
    • 18.3.0
    • 18.7.22
    • 18.7.23
    • 18.8.29
    • 20.3.16
    • 20.6.30
    • 20.7.2
    • 25.10.27
    • 25.10.29
    • 25.10.30
    • 25.10.31
    • 25.11.1
    • 25.11.17
    • 25.11.19
    • 25.11.2
    • 25.11.20
    • 25.11.25
    • 25.11.27
    • 25.11.28
    • 25.11.29
    • 25.11.3
    • 25.11.30
    • 25.11.4
    • 25.11.5
    • 25.11.6
    • 25.11.7
    • 25.11.8
    • 25.12.1
    • 25.12.10
    • 25.12.11
    • 25.12.12
    • 25.12.14
    • 25.12.16
    • 25.12.17
    • 25.12.18
    • 25.12.19
    • 25.12.2
    • 25.12.20
    • 25.12.21
    • 25.12.22
    • 25.12.23
    • 25.12.24
    • 25.12.25
    • 25.12.26
    • 25.12.27
    • 25.12.28
    • 25.12.29
    • 25.12.30
    • 25.12.31
    • 25.12.5
    • 25.12.6
    • 25.12.7
    • 25.12.8
    • 25.12.9
    • 26.1.1
    • 26.1.11
    • 26.1.2
    • 26.1.3
    • 26.1.4
    • 26.1.5
    • 26.1.7
    • 26.1.9
    Affected ranges
    • ECOSYSTEM: ≤ 26.1.11

    No fix published

  • vnu-jar npm

    Affected ranges
    • SEMVER: ≤ 26.1.11

    No fix published

  • vnu Ubuntu:26.10

    Versions
    • 23.4.11+dfsg-5
    • 26.5.2.1+dfsg-1
    • 26.5.2.1+dfsg-2
    • 26.8.15.1+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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