{"schema":"threatline.record/2","record":{"id":"CVE-2026-110101","aliases":[],"summary":"Koillection through 1.8.4 Stored XSS via Datum File Attachment Uploads","details":"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.","categories":["Unclassified"],"product":"Koillection","vendor":"benjaminjonard","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110101","source_modified_at":"2026-10-16T22:12:14.462Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Koillection","vendor":"benjaminjonard","versions":[{"version":"0","lessThanOrEqual":"1.8.4","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00215,"percentile":0.11313,"score_date":"2026-10-23"},"published_at":"2026-10-13T16:53:05.007Z","modified_at":"2026-10-16T22:12:14.462Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110101","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T22:12:14.462Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110101","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/benjaminjonard/koillection/issues/1609","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/benjaminjonard/koillection/blob/1.8.4/src/Service/ImageHandler.php#L43-L50","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/benjaminjonard/koillection/blob/1.8.4/src/Entity/Datum.php#L141-L145","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/benjaminjonard/koillection/releases/tag/1.8.4","tags":["release-notes"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/koillection-through-1.8.4-stored-xss-via-datum-file-attachment-uploads","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T22:11:44.598138Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T22:12:14.462Z","content_hash":"97b0b3fcf710f9666a07dcdd8f693dcbd00335a565f3bb70b35126b65dd17d57"}}