{"id":"CVE-2024-58353","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-58353","generatedAt":"2026-10-28T09:42:21.350Z","title":"Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/<id>).","description":"Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/<id>). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP, so an attacker who can create an event type with a malicious booking question label can inject arbitrary HTML/JavaScript that executes when a victim visits the booking view URL. Self-hosted instances with open registration are particularly at risk. The issue is fixed in version 4.7.16.","published":"2026-07-23T22:16:51.000Z","lastModified":"2026-07-30T16:41:26.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-80"],"affected":[],"epss":{"score":0.00415,"percentile":0.35664,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def","source":"disclosure@vulncheck.com"},{"url":"https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions","source":"disclosure@vulncheck.com"},{"url":"https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-58353","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."}