{"id":"CVE-2026-108725","published":"2026-10-11T13:17:16.137","lastModified":"2026-10-16T19:18:44.867","description":"Cheshire Cat AI core through 2.0.23 contains a stored cross-site scripting vulnerability in the uploads plugin that allows authenticated users to upload HTML files via POST /uploads without type restrictions. Attackers can send the public GET /uploads/{path} URL to a signed-in victim, executing script in the application origin with the victim's access_token cookie, including administrators.","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/cheshire-cat-ai/core","tags":[]},{"url":"https://github.com/cheshire-cat-ai/core/blob/c22731e7009ac89835b1d7b1cabc5989d998ec3e/src/cat/scaffold/plugins/uploads/endpoints.py#L28-L96","tags":[]},{"url":"https://hackmd.io/@haind03/cheshire-cat-uploads-stored-html-same-origin-xss","tags":[]},{"url":"https://www.vulncheck.com/advisories/cheshire-cat-ai-core-through-2.0.23-stored-xss-via-uploads-plugin","tags":[]},{"url":"https://hackmd.io/@haind03/cheshire-cat-uploads-stored-html-same-origin-xss","tags":[]}],"exploitRefs":[{"url":"https://github.com/cheshire-cat-ai/core","tags":[]},{"url":"https://github.com/cheshire-cat-ai/core/blob/c22731e7009ac89835b1d7b1cabc5989d998ec3e/src/cat/scaffold/plugins/uploads/endpoints.py#L28-L96","tags":[]}],"hasPoc":true,"ai":null}