{"id":"CVE-2026-108725","summary":"Cheshire Cat AI core through 2.0.23 Stored XSS via uploads plugin","details":"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.","modified":"2026-10-14T02:31:05.592437836Z","published":"2026-10-11T12:19:34.601Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108725.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108725.json"},{"type":"ADVISORY","url":"https://hackmd.io/@haind03/cheshire-cat-uploads-stored-html-same-origin-xss"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108725"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/cheshire-cat-ai-core-through-2.0.23-stored-xss-via-uploads-plugin"},{"type":"PACKAGE","url":"https://github.com/cheshire-cat-ai/core"},{"type":"ARTICLE","url":"https://github.com/cheshire-cat-ai/core/blob/c22731e7009ac89835b1d7b1cabc5989d998ec3e/src/cat/scaffold/plugins/uploads/endpoints.py#L28-L96"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cheshire-cat-ai/core","events":[{"introduced":"0"},{"fixed":"c22731e7009ac89835b1d7b1cabc5989d998ec3e"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"2.0.23"},{"fixed":"2.0.23"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["2.0.22","2.0.21","2.0.20","2.0.19","1.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108725.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"}]}