CVE-2026-110103CWE-79cross-site-scripting

CVE-2026-110103

Medium · published October 13, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
12.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
5.1 · 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
EPSS
0.00226 · 12.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-13T21:17Z
References (6)
https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/api/upload_handlers.go#L36-L54 · [email protected]https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/pkg/uploader/uploader.go#L90-L121 · [email protected]https://github.com/mlogclub/bbs-go/commit/5bebf98bb9e0ac5162d4f8faf7a65fc0d496a362 · [email protected]https://github.com/mlogclub/bbs-go/issues/305 · [email protected]https://github.com/mlogclub/bbs-go/pull/306 · [email protected]https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-stored-xss-via-image-upload-content-type · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 16:53Z
    bbs-go through 4.4.6 Stored XSS via Image Upload Content-Type
    cvelistv5
  • 13 OCT 16:53Z
    bbs-go through 4.4.6 Stored XSS via Image Upload Content-Type
    cvelistv5