{"id":"CVE-2026-101127","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-101127","generatedAt":"2026-10-28T01:49:00.474Z","title":"Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public form upload endpoint validates the uploaded file's extension and detected MIME type, but stores the attacker-supplied original multipart…","description":"Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public form upload endpoint validates the uploaded file's extension and detected MIME type, but stores the attacker-supplied original multipart filename verbatim in `#__baforms_submissions_attachments.name`. A later anonymous form submission associates that temporary attachment with the newly created submission. When an administrator opens the submission, the component's JavaScript retrieves the stored attachment record and concatenates `file.name` directly into an HTML string. The complete string is assigned to `innerHTML`.","published":"2026-09-29T17:17:05.000Z","lastModified":"2026-10-06T16:47:37.000Z","status":"Analyzed","sourceIdentifier":"security@joomla.org","cvss":{"version":"4.0","score":8.6,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-79"],"affected":["balbooa/forms"],"epss":{"score":0.0033,"percentile":0.25902,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00318,"percentile":0.22347}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T17:17:05.000Z","detail":{"score":"8.6","severity":"HIGH","publishedAt":"2026-09-29T17:17:05.187Z"},"summary":"New CVE, high severity (CVSS 8.6)."}],"references":[{"url":"https://www.balbooa.com/","tags":["Product"],"source":"security@joomla.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-101127","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}