CVE-2026-110230CWE-862broken-access-control

CVE-2026-110230

Medium · published October 13, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
22.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
5.3 · 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
EPSS
0.00310 · 22.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-13T23:18Z
References (6)
https://github.com/sergix44/xbackbone · [email protected]https://github.com/sergix44/xbackbone/blob/226af4f0cec218f563da6d53ececfa4708e6f3e7/app/Controllers/MediaController.php#L204-L229 · [email protected]https://github.com/sergix44/xbackbone/commit/5e91a2a9859d20e41ee2e2403cfbe673804f6221 · [email protected]https://github.com/sergix44/xbackbone/pull/671 · [email protected]https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ByAj-Xoifl · [email protected]https://www.vulncheck.com/advisories/xbackbone-through-3.8.2-missing-authorization-via-upload-vanity-endpoint · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 18:50Z
    XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
    cvelistv5
  • 13 OCT 18:50Z
    XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
    cvelistv5