{"cve":"CVE-2026-30048","nvd":{"published":"2026-03-18T18:16:27.607","modified":"2026-06-17T10:32:28.533","status":"Deferred","description":"A stored cross-site scripting (XSS) vulnerability exists in the NotChatbot WebChat widget thru 1.4.4. User-supplied input is not properly sanitized before being stored and rendered in the chat conversation history. This allows an attacker to inject arbitrary JavaScript code which is executed when the chat history is reloaded. The issue is reproducible across multiple independent implementations of the widget, indicating that the vulnerability resides in the product itself rather than in a specific website configuration.","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://app.unpkg.com/@developer.notchatbot/webchat@1.4.4","https://gist.github.com/0xN4no/0601f398942a29259d217ea650f694fe","https://github.com/0xN4no/CVE-2026-30048","https://www.npmjs.com/package/@developer.notchatbot/webchat"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-30048","score":0.00257,"percentile":0.17411,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w3vx-52j6-9fjp","url":"https://osv.dev/vulnerability/GHSA-w3vx-52j6-9fjp","summary":"NotChatbot WebChat has a stored cross-site scripting (XSS) vulnerability","modified":"2026-03-19T13:11:20.533498Z","packages":[{"ecosystem":"npm","name":"@developer.notchatbot/webchat","purl":"pkg:npm/%40developer.notchatbot/webchat","ranges":["<=1.5.0"],"fixed":[]}]}],"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."]}