CVE-2026-7502

LinkStackOrg LinkStack Management Endpoint UserController.php saveLink authorization

State: Published
Severity: 5.3 Medium
Published: Apr 30, 2026
Updated: May 1, 2026
Reserved: Apr 30, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	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/E:P	VulDB
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C	VulDB
3.0	5.4 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C	VulDB
2.0	5.5 Medium	AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:C	VulDB

Weaknesses

CWE-639 Authorization Bypass
CWE-285 Improper Authorization

Affected Products

Product	Versions
LinkStackLinkStackOrg	4.8.0Affected 4.8.1Affected 4.8.2Affected 4.8.3Affected 4.8.4Affected 4.8.5Affected 4.8.6Affected

References

VDB-360312 | LinkStackOrg LinkStack Management Endpoint UserController.php saveLink authorizationvdb-entrytechnical-description
VDB-360312 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #801787 | LinkStackOrg LinkStack 4.8.6 Authorization Bypassthird-party-advisory
https://github.com/LinkStackOrg/LinkStack/pull/975issue-trackingpatch
https://github.com/LinkStackOrg/LinkStack/pull/975#issuecomment-4224234970issue-trackingpatch
https://github.com/az10b/security-advisories/blob/main/idor_linkstack.mdexploit
https://github.com/LinkStackOrg/LinkStack/product

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