{"cve":"CVE-2026-39964","nvd":{"published":"2026-05-22T18:16:21.690","modified":"2026-07-23T16:10:00.137","status":"Deferred","description":"TypeBot is a chatbot builder tool. In versions prior to 3.16.0, the Typebot viewer (packages/embeds/js) renders anchor tags from rich text bubble content without filtering the javascript: URI scheme. A bot author can set a link URL to javascript:PAYLOAD, which executes in the visitor's browser context when clicked. Since the viewer is typically embedded in a third-party site, the attacker's JavaScript runs in the host page's origin and can exfiltrate cookies and session tokens. This can result in any authenticated Typebot user (including those on the free tier) being able to create a bot with this payload. Shared bots are publicly accessible — no victim authentication is required. This issue has been resolved in version 3.16.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/baptisteArno/typebot.io/commit/2c3fc7267a5e1529ba4b1a2ab4f1edb3e3b8990b","https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0","https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-hqmv-v56g-4m47","https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-hqmv-v56g-4m47"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-39964","score":0.00241,"percentile":0.15292,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hqmv-v56g-4m47","url":"https://osv.dev/vulnerability/GHSA-hqmv-v56g-4m47","summary":"Typebot.io has stored XSS via `javascript`: URI in text bubble links — bot author executes JS on visitors' browsers","modified":"2026-09-10T03:51:05.949392299Z","packages":[{"ecosystem":"npm","name":"@typebot.io/js","purl":"pkg:npm/%40typebot.io/js","ranges":["<0.10.1"],"fixed":["0.10.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}