{"id":"CVE-2026-110103","title":"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","summary":"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 documen…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T17:17:34.150","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110103","references":[{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/api/upload_handlers.go#L36-L54","label":"disclosure@vulncheck.com"},{"url":"https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/pkg/uploader/uploader.go#L90-L121","label":"disclosure@vulncheck.com"},{"url":"https://github.com/mlogclub/bbs-go/commit/5bebf98bb9e0ac5162d4f8faf7a65fc0d496a362","label":"disclosure@vulncheck.com"},{"url":"https://github.com/mlogclub/bbs-go/issues/305","label":"disclosure@vulncheck.com"},{"url":"https://github.com/mlogclub/bbs-go/pull/306","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-stored-xss-via-image-upload-content-type","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-13T17:38:53.185Z","slug":"CVE-2026-110103","body":"## Overview\n\nbbs-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}