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CVE-2026-72575— daptin - Authentication Bypass via Null Owner Permission Check on usergroup Objects

Quick assessment

Affected
daptin daptin
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Daptin是Daptin组织开源的一个内容管理系统。 Daptin v0.12.34及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于server/permission/permission.go文件中的权限检查函数（CanRead、CanPeek、CanCreate、CanUpdate、CanDelete、CanRefer）未拒绝空/零引用，导致未经身份验证的远程攻击者能够读取、创建、更新和删除用户组记录。

CVSS 9.1 · Critical EPSS 0.53% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
daptin daptin ≤ v0.12.34 affected
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I. Basic Information for CVE-2026-72575

Vulnerability Information
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Vulnerability Title
daptin - Authentication Bypass via Null Owner Permission Check on usergroup Objects
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authorization vulnerability in daptin through v0.12.34 allows unauthenticated remote attackers to read, create, update, and delete usergroup records. The permission check functions (CanRead, CanPeek, CanCreate, CanUpdate, CanDelete, CanRefer) in server/permission/permission.go return true whenever p.UserId equals the requesting userId, but fail to reject the null/zero reference — unlike CanExecute, which explicitly guards it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Daptin 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Daptin是Daptin组织开源的一个内容管理系统。 Daptin v0.12.34及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于server/permission/permission.go文件中的权限检查函数（CanRead、CanPeek、CanCreate、CanUpdate、CanDelete、CanRefer）未拒绝空/零引用，导致未经身份验证的远程攻击者能够读取、创建、更新和删除用户组记录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
daptin daptin 0 ~ v0.12.34 -

II. Public POCs for CVE-2026-72575

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7059 chars
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III. Intelligence Information for CVE-2026-72575

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Patches & Fixes for CVE-2026-72575 (1)

IV. Related Vulnerabilities

Same product: daptin
Same vendor: daptin
Same weakness: CWE-284

V. Comments for CVE-2026-72575

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