{"id":"CVE-2026-110101","revision":"985bc4325f63428aa1842344a2b86dcd","records":[{"revision":"985bc4325f63428aa1842344a2b86dcd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110101","aliases":[],"title":"Koillection through 1.8.4 Stored XSS via Datum File Attachment Uploads","description":"Koillection through 1.8.4 contains a stored cross-site scripting vulnerability that allows authenticated users to upload HTML files as Datum file attachments lacking MIME restrictions. Attackers can upload HTML payloads via POST /api/data/{id}/file, served as text/html from public/uploads, executing JavaScript in victims' sessions to perform actions on their behalf.","state":0,"publishedAt":"2026-10-13T16:53:05.007+00:00","modifiedAt":"2026-10-16T22:12:14.462+00:00","affected":[{"ecosystem":"Vendor product","name":"Koillection","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"benjaminjonard\",\n                    \"product\": \"Koillection\",\n                    \"packageURL\": \"pkg:github/benjaminjonard/koillection\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"1.8.4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/benjaminjonard/koillection\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 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,"severity":"MEDIUM"}],"references":["https://github.com/benjaminjonard/koillection/issues/1609","https://github.com/benjaminjonard/koillection/blob/1.8.4/src/Service/ImageHandler.php#L43-L50","https://github.com/benjaminjonard/koillection/blob/1.8.4/src/Entity/Datum.php#L141-L145","https://github.com/benjaminjonard/koillection/releases/tag/1.8.4","https://www.vulncheck.com/advisories/koillection-through-1.8.4-stored-xss-via-datum-file-attachment-uploads"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110101","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110101","identifiers":["CVE-2026-110101"]},"retained":false,"historicalAffected":[]}],"coverage":[]}