CVE-2026-110230
XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | sergix44 |
| Product | xbackbone |
| Published | Oct 13, 2026 |
| Last Updated | Oct 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
sergix44 / XBackBone
0 ≤ 3.8.2
References
github.com: https://github.com/sergix44/xbackbone/pull/671 github.com: https://github.com/sergix44/xbackbone/commit/5e91a2a9859d20e41ee2e2403cfbe673804f6221 hackmd.io: https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ByAj-Xoifl github.com: https://github.com/sergix44/xbackbone/blob/226af4f0cec218f563da6d53ececfa4708e6f3e7/app/Controllers/MediaController.php#L204-L229 github.com: https://github.com/sergix44/xbackbone vulncheck.com: https://www.vulncheck.com/advisories/xbackbone-through-3.8.2-missing-authorization-via-upload-vanity-endpoint
Credits
hieuPenguinnn AARUSHGAUR