{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46392 exists.","fix":"No fix has been published for CVE-2026-46392 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-46392 is a high-severity cross-site scripting vulnerability in haxtheweb haxcms-php, published on 5 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-46392 and fix it if it is affected.\n\nWhat it is: CVE-2026-46392 is a high-severity cross-site scripting vulnerability in haxtheweb haxcms-php, published on 5 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46392 exists.\n\nAffected product: haxtheweb haxcms-php. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-46392/ (Markdown: https://insights.sbomify.com/CVE-2026-46392/index.md)","id":"CVE-2026-46392","markdown":"https://insights.sbomify.com/CVE-2026-46392/index.md","name":"CVE-2026-46392","record":{"aliases":[],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"HAX CMS PHP","requires_auth":"low_privilege","summary":"Attackers can execute arbitrary JavaScript in the victim's browser by uploading HTML files with uppercase extensions that bypass content-disposition headers.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"},{"id":"CWE-178","name":"Improper Handling of Case Sensitivity"}],"description":"HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0 of HAX CMS PHP, the `saveFile` endpoint validates upload extensions case-insensitively and writes the filename to disk verbatim, but the `.htaccess` rule that forces `Content-Disposition: attachment` on HTML files is case-sensitive. An HTML file uploaded with an uppercase extension (`.HTML`, `.Html`, `.HTM`) is still served as `text/html` but the forced-download header never applies, so the browser renders it inline and executes any embedded JavaScript in the HAXcms origin. This bypasses the mitigation shipped for CVE-2026-22704. Version 26.0.0 contains a fix.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"HAX CMS PHP Has a Stored XSS via Case-Sensitivity Mismatch in HTML Upload Validation","id":"CVE-2026-46392","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"HAXcms createSite SSRF Enables Arbitrary File Read","id":"CVE-2026-46393"},"packages":[],"prev":{"headline":"HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis","id":"CVE-2026-46391"},"products":["haxcms-php"],"published":"2026-06-05","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-05","vendors":["haxtheweb"]},"summary":"Attackers can execute arbitrary JavaScript in the victim's browser by uploading HTML files with uppercase extensions that bypass content-disposition headers.","url":"https://insights.sbomify.com/CVE-2026-46392/"}