{"id":"CVE-2026-110103","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.","modified":"2026-10-14T02:48:00.876579001Z","published":"2026-10-13T16:53:06.263Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110103.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110103.json"},{"type":"PACKAGE","url":"https://github.com/mlogclub/bbs-go"},{"type":"ARTICLE","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/api/upload_handlers.go#L36-L54"},{"type":"ARTICLE","url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/pkg/uploader/uploader.go#L90-L121"},{"type":"FIX","url":"https://github.com/mlogclub/bbs-go/commit/5bebf98bb9e0ac5162d4f8faf7a65fc0d496a362"},{"type":"REPORT","url":"https://github.com/mlogclub/bbs-go/issues/305"},{"type":"FIX","url":"https://github.com/mlogclub/bbs-go/pull/306"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110103"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-stored-xss-via-image-upload-content-type"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mlogclub/bbs-go","events":[{"introduced":"0"},{"last_affected":"7745195925f2094d1f37a1d7bbf13837fa948898"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"4.4.6"}],"source":"AFFECTED_FIELD"}}],"versions":["v4.4.6","v4.4.5","v4.4.5-rc2","v4.4.5-rc1","v4.4.4","v4.4.3","v4.4.3-rc3","v4.4.3-rc2","v4.4.3-rc1","v4.4.2","v4.4.2-rc5","v4.4.2-rc4","v4.4.2-rc3","v4.4.2-rc2","v4.4.2-rc1","v4.4.1-rc4","v4.4.1","v4.4.1-rc3","v4.4.1-rc2","v4.4.1-rc1","v4.4.0-rc5","v4.4.0","v4.4.0-rc4","v4.3.9","v4.3.6","v4.3.5","v4.3.4","v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.1.2","v4.1.1","v4.1.0","v4.0.6","v4.0.5","v4.0.3","v4.0.1","v4.0.0","v4.0.0-beta2","v4.0.0-beta1","v3.5.6","v3.5.5","v3.5.4","3.5.4","v3.5.3","v3.5.2","v3.5.1","v3.5.0","v3.4.3","v3.4.2","v3.4.1","v3.4.0","v3.3.2","3.3.2","v3.3.1","v3.3.0","v3.2.6","v3.2.5","v3.2.4","v3.2.3","v3.2.2","v3.2.1","v3.2.0","v3.1.9","v3.1.8","v3.1.7","v3.1.6","v3.1.5","v3.1.4","v3.1.3","v3.1.2","v3.1.1","v3.1.0","v3.0.9","v3.0.7","v3.0.6","v3.0.5","v3.0.4","v3.0.3","v3.0.2","v3.0.1","v3.0.0","v2.0.0","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110103.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:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}