TI-2026-06591 Aliases CVE-2026-7501 GHSA-3v6f-p2hc-xq2j

LinkStackOrg LinkStack UserController.php editPage cross site scripting

MEDIUM 56CWE-79Published 2026-04-30 · Updated 2026-05-01

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting, Code execution
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

A weakness has been identified in LinkStackOrg LinkStack up to 4.8.6. Impacted is the function editPage of the file app/Http/Controllers/UserController.php. Executing a manipulation of the argument pageDescription can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through a pull request but has not reacted yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00254 17th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
LinkStackOrg	LinkStack	4.8.0; 4.8.1; 4.8.2; 4.8.3; 4.8.4; 4.8.5; 4.8.6	—	No fix listed	CNA

LinkStack VendorLinkStackOrg Affected 4.8.0; 4.8.1; 4.8.2; 4.8.3; 4.8.4; 4.8.5; 4.8.6 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-7501
2026-10-03 Alias added: GHSA-3v6f-p2hc-xq2j

References

TI-2026-06592 LinkStackOrg LinkStack Management Endpoint UserController.php saveLink authorization CVSS 4.0MEDIUM 5.3
TI-2026-80135 Cross-site request forgery in LinkStackOrg LinkStack CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences