CVE-2026-110230
XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
sergix44 XBackBone
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 22% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- XBackBoneaffected: all versions through 3.8.2CVE List
References 6
- github.com/sergix44/xbackbone/pull/671Fixvia CVE List
- github.com/sergix44/xbackbone/commit/5e91a2a9859d20e41ee2e2403cfbe673804f6221Fixvia CVE List
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ByAj-XoiflAdvisoryvia CVE List
- vulncheck.com/advisories/xbackbone-through-3.8.2-missing-authorization-via-upload-vanity-endpointAdvisoryvia CVE List
- github.com/sergix44/xbackbone/blob/226af4f0cec218f563da6d53ececfa4708e6f3e7/app/Controllers/MediaController.php#L204-L229Referencevia CVE List
- github.com/sergix44/xbackboneReferencevia CVE List