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CVE-2026-110230— XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint

Quick assessment

Affected
sergix44 XBackBone
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

XBackBone 3.8.2 及之前版本存在一个缺失的授权验证漏洞，该漏洞允许已认证的用户通过 POST /upload/{id}/vanity 路由修改其他用户的上传分享代码。攻击者可以向 MediaController::createVanity() 提供连续的上传 ID，从而破坏现有的分享链接，并利用自己的上传文件抢占并接管这些被释放的代码。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
sergix44 XBackBone ≤ 3.8.2 affected
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I. Basic Information for CVE-2026-110230

Vulnerability Information
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Vulnerability Title
XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sergix44 XBackBone 0 ~ 3.8.2 -

II. Public POCs for CVE-2026-110230

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III. Intelligence Information for CVE-2026-110230

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Patches & Fixes for CVE-2026-110230 (3)

Vendor Advisories for CVE-2026-110230 (1)

Security Blog Posts for CVE-2026-110230 (1)

Other References for CVE-2026-110230 (1)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-110230

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