{"id":"CVE-2026-1009","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-1009","generatedAt":"2026-10-28T07:25:00.668Z","title":"A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content.","description":"A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.\nSuccessful exploitation allows the attacker’s payload to execute in the context of the victim’s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.","published":"2026-01-15T23:15:51.000Z","lastModified":"2026-06-17T10:14:52.000Z","status":"Analyzed","sourceIdentifier":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79","CWE-284"],"affected":["altium/altium live"],"epss":{"score":0.00238,"percentile":0.1478,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.altium.com/platform/security-compliance/security-advisories","tags":["Vendor Advisory"],"source":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-1009","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."}