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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
mlogclub bbs-go unaffected
Version Status Constraints
0 affected ≤ 4.4.6

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Bbs-go Project Subscribe
Bbs-go Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/handlers/api/upload_handlers.go#L36-L54 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/pkg/uploader/uploader.go#L90-L121 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/commit/5bebf98bb9e0ac5162d4f8faf7a65fc0d496a362 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/issues/305 cve-icon cve-icon
https://github.com/mlogclub/bbs-go/pull/306 cve-icon cve-icon
https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-stored-xss-via-image-upload-content-type cve-icon cve-icon
History

Tue, 13 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description 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.
Title bbs-go through 4.4.6 Stored XSS via Image Upload Content-Type
First Time appeared Bbs-go Project
Bbs-go Project bbs-go
Weaknesses CWE-79
CPEs cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*
Vendors & Products Bbs-go Project
Bbs-go Project bbs-go
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-13T16:53:06.263Z

Reserved: 2026-10-13T16:22:19.909Z

Link: CVE-2026-110103

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-13T17:17:34.150

Modified: 2026-10-13T17:17:34.150

Link: CVE-2026-110103

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses