CVE-2026-110230
XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Reserved
- Oct 13, 2026
Description
XBackBone through 3.8.2 contains a missing authorization vulnerability that allows authenticated users to change other users' upload share codes via the POST /upload/{id}/vanity route. Attackers can supply sequential upload ids to MediaController::createVanity() to break existing share links and hijack the freed codes with their own uploads.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
XBackBonesergix44 |
|
References
- https://github.com/sergix44/xbackbone/pull/671patchissue-tracking
- https://github.com/sergix44/xbackbone/commit/5e91a2a9859d20e41ee2e2403cfbe673804f6221patch
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ByAj-Xoiflthird-party-advisory
- https://github.com/sergix44/xbackbone/blob/226af4f0cec218f563da6d53ececfa4708e6f3e7/app/Controllers/MediaController.php#L204-L229technical-description
- https://github.com/sergix44/xbackboneproduct
- VulnCheck Advisory: XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpointthird-party-advisory
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