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CVE-2026-7502— LinkStackOrg LinkStack Management Endpoint UserController.php saveLink authorization

Quick assessment

Affected
LinkStackOrg LinkStack
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.

LinkStack是LinkStack开源的一个独特的平台，为在线管理和共享链接提供了高效的解决方案。 LinkStack 4.8.6及之前版本存在授权问题漏洞，该漏洞源于Management Endpoint组件文件app/Http/Controllers/UserController.php中saveLink函数，可能导致授权绕过。

CVSS 5.4 · Medium EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1136.003 · Cloud Account

Affected Version Matrix 7

VendorProduct Version RangeStatus
LinkStackOrg LinkStack 4.8.0 affected
4.8.1 affected
4.8.2 affected
4.8.3 affected
4.8.4 affected
4.8.5 affected
4.8.6 affected
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I. Basic Information for CVE-2026-7502

Vulnerability Information
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Vulnerability Title
LinkStackOrg LinkStack Management Endpoint UserController.php saveLink authorization
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in LinkStackOrg LinkStack up to 4.8.6. The affected element is the function saveLink of the file app/Http/Controllers/UserController.php of the component Management Endpoint. The manipulation leads to authorization bypass. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.
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
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
LinkStack 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LinkStack是LinkStack开源的一个独特的平台，为在线管理和共享链接提供了高效的解决方案。 LinkStack 4.8.6及之前版本存在授权问题漏洞，该漏洞源于Management Endpoint组件文件app/Http/Controllers/UserController.php中saveLink函数，可能导致授权绕过。
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
LinkStackOrg LinkStack 4.8.0 -

II. Public POCs for CVE-2026-7502

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III. Intelligence Information for CVE-2026-7502

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Patches & Fixes for CVE-2026-7502 (2)

Vendor Pages for CVE-2026-7502 (1)

Other References for CVE-2026-7502 (1)

IV. Related Vulnerabilities

Same product: LinkStack
Same vendor: LinkStackOrg
Same weakness: CWE-639

V. Comments for CVE-2026-7502

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