Authorization Bypass in LinkStack by LinkStackOrg
CVE-2026-7502

5.3MEDIUM

Key Information:

Vendor

Linkstackorg

Status
Linkstack
Vendor
CVE Published:
30 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7502?

A security vulnerability has been found in the LinkStack Management Endpoint, specifically within the saveLink function located in app/Http/Controllers/UserController.php. This flaw allows attackers to initiate an authorization bypass remotely, potentially gaining unauthorized access to sensitive functionalities. The issue has been disclosed publicly, and a pull request to resolve it is pending acceptance, highlighting the urgency for users to take protective measures against potential exploitation.

Affected Version(s)

LinkStack 4.8.0

LinkStack 4.8.1

LinkStack 4.8.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7502 - Proof of Concept

References

https://vuldb.com/vuln/360312
vdb-entrytechnical-description
https://vuldb.com/vuln/360312/cti
signaturepermissions-required
https://vuldb.com/submit/801787
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

AliAz (VulDB User)
VulDB CNA Team
.