{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66917 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66917 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66917 is a high-severity cross-site scripting vulnerability in joomgalleryfriends.net JoomGallery extension for Joomla, published on 22 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-66917 and fix it if it is affected.\n\nWhat it is: CVE-2026-66917 is a high-severity cross-site scripting vulnerability in joomgalleryfriends.net JoomGallery extension for Joomla, published on 22 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-66917 in the wild and no public exploit code.\n\nAffected product: joomgalleryfriends.net JoomGallery extension for Joomla. 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-2026-66917/ (Markdown: https://insights.sbomify.com/CVE-2026-66917/index.md)","id":"CVE-2026-66917","markdown":"https://insights.sbomify.com/CVE-2026-66917/index.md","name":"CVE-2026-66917","record":{"aliases":["GHSA-8vxv-gf52-gm5h"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Joomla JoomGallery extension","requires_auth":"high_privilege","summary":"An authenticated privileged user can store XSS payloads in images, leading to JavaScript execution in visitors' browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Joomla","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery \u003c 4.4.0 - An authenticated, privileged can store an XSS payload in any image causing JS execution in every visitor's browser.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-23","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-23T15:18:06Z","kind":"github_poc","ref":"https://github.com/toanln-cov/CVE-2026-66917","stars":0,"title":"IDOR + Stored XSS via Broken Object-Level Authorization in JoomGallery"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery \u003c 4.4.0","id":"CVE-2026-66917","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"DOM-Based Cross-Site Scripting via Unsanitized SVG Node Icons","id":"CVE-2026-66918"},"packages":[],"prev":{"headline":"Joomla Extension - joomgalleryfriends.net - Password-Protected Category Bypass via JSON Format in JoomGallery \u003c 4.4.0","id":"CVE-2026-66916"},"products":["JoomGallery extension for Joomla"],"published":"2026-08-22","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-24","vendors":["joomgalleryfriends.net"]},"summary":"An authenticated privileged user can store XSS payloads in images, leading to JavaScript execution in visitors' browsers.","url":"https://insights.sbomify.com/CVE-2026-66917/"}