{"answers":{"affected":"4 open source packages ship an affected version, including nu.validator:validator and vnu-jar. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15104 exists.","fix":"No fix has been published for CVE-2025-15104 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-15104 is a medium-severity server-side request forgery vulnerability in The Nu Html Checker, published on 16 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-15104 and fix it if it is affected.\n\nWhat it is: CVE-2025-15104 is a medium-severity server-side request forgery vulnerability in The Nu Html Checker, published on 16 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15104 exists.\n\nAffected packages and fixed versions:\n- nu.validator:validator (Maven): affected all versions up to 26.1.11; no fix listed\n- nu.validator:validator (Maven): affected all versions up to 26.1.11; no fix listed\n- vnu-jar (npm): affected all versions up to 26.1.11; no fix listed\n- vnu-jar (npm): affected all versions up to 26.1.11; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-15104/ (Markdown: https://insights.sbomify.com/CVE-2025-15104/index.md)","id":"CVE-2025-15104","markdown":"https://insights.sbomify.com/CVE-2025-15104/index.md","name":"CVE-2025-15104","record":{"aliases":["DEBIAN-CVE-2025-15104","GHSA-fccg-7w3p-w66f","UBUNTU-CVE-2025-15104"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"HTML validation service","requires_auth":"none","summary":"Attackers can bypass hostname restrictions to force the validator to make requests to internal resources, potentially exposing sensitive data.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Fluid Attacks","cpe":[{"product":"validator","vendor":"validator"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"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","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"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).","ecosystems":["Maven","npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF","id":"CVE-2025-15104","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"ssrf","year":"2025"},"n_packages":4,"n_references":2,"next":{"headline":"getmaxun auth.ts hard-coded key","id":"CVE-2025-15105"},"packages":[{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["26.1.11"],"package":"nu.validator:validator","purl":null,"source":"GHSA-fccg-7w3p-w66f"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["26.1.11"],"package":"nu.validator:validator","purl":"pkg:maven/nu.validator/validator","source":"GHSA-fccg-7w3p-w66f"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["26.1.11"],"package":"vnu-jar","purl":null,"source":"GHSA-fccg-7w3p-w66f"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["26.1.11"],"package":"vnu-jar","purl":"pkg:npm/vnu-jar","source":"GHSA-fccg-7w3p-w66f"}],"prev":{"headline":"DVP-12SE11T - Authentication Bypass via Partial Password Disclosure","id":"CVE-2025-15103"},"products":["The Nu Html Checker"],"published":"2026-01-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-16","vendors":["The Nu Html Checker"]},"summary":"Attackers can bypass hostname restrictions to force the validator to make requests to internal resources, potentially exposing sensitive data.","url":"https://insights.sbomify.com/CVE-2025-15104/"}