{"cve":"CVE-2026-26193","nvd":{"published":"2026-02-19T20:25:42.453","modified":"2026-06-17T10:25:55.207","status":"Analyzed","description":"Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the `embeds` property on a response message, the content of which is loaded into an iFrame with a sandbox that has `allow-scripts` and `allow-same-origin` set, ignoring the \"iframe Sandbox Allow Same Origin\" configuration. This enables stored XSS on the affected chat. This also triggers when the chat is in the shared format. The result is a shareable link containing the payload that can be distributed to any other users on the instance. Version 0.6.44 fixes the issue.","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/open-webui/open-webui/blob/6f1486ffd0cb288d0e21f41845361924e0d742b3/src/lib/components/chat/Messages/ResponseMessage.svelte#L689-L703","https://github.com/open-webui/open-webui/security/advisories/GHSA-vjm7-m4xh-7wrc"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-26193","score":0.00233,"percentile":0.14258,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-vjm7-m4xh-7wrc","url":"https://osv.dev/vulnerability/GHSA-vjm7-m4xh-7wrc","summary":"Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages","modified":"2026-07-13T16:42:28.010872813Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.6.44"],"fixed":["0.6.44"]}]},{"id":"PYSEC-2026-2760","url":"https://osv.dev/vulnerability/PYSEC-2026-2760","summary":"Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages","modified":"2026-07-13T16:32:24.957804332Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.6.44"],"fixed":["0.6.44"]}]}],"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."]}