{"schema":"threatline.record/2","record":{"id":"CVE-2026-110103","aliases":[],"summary":"bbs-go through 4.4.6 Stored XSS via Image Upload Content-Type","details":"bbs-go through 4.4.6 contains a stored cross-site scripting vulnerability that allows authenticated users to upload HTML or SVG files by spoofing the multipart Content-Type in POST /api/upload. Attackers can upload script-bearing documents served inline from /res and send their URLs to administrators, executing script on the forum's origin.","categories":["Unclassified"],"product":"bbs-go","vendor":"mlogclub","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110103","source_modified_at":"2026-10-14T15:59:17.370Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"bbs-go","vendor":"mlogclub","versions":[{"version":"0","lessThanOrEqual":"4.4.6","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00226,"percentile":0.12646,"score_date":"2026-10-23"},"published_at":"2026-10-13T16:53:06.263Z","modified_at":"2026-10-14T15:59:17.370Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110103","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T15:59:17.370Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110103","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/mlogclub/bbs-go/issues/305","tags":["issue-tracking","technical-description"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/pkg/uploader/uploader.go#L90-L121","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/api/upload_handlers.go#L36-L54","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/pull/306","tags":["patch","issue-tracking"]},{"source":"CVE List","url":"https://github.com/mlogclub/bbs-go/commit/5bebf98bb9e0ac5162d4f8faf7a65fc0d496a362","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-stored-xss-via-image-upload-content-type","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T14:50:07.789239Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T15:59:17.370Z","content_hash":"306717fa09d7a00cadaaae155b6888865f0a486c955f7f9374257e40269996ee"}}