CVE-2026-7501 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in LinkStack, a self-hosted link management platform, in versions through 4.8.6. The issue arises in the 'editPage' function of the 'UserController.php' file, where user-supplied descriptions are inadequately sanitized. This flaw allows the injection of JavaScript event handlers into links, which are then executed when the link is viewed. The vulnerability can be exploited remotely by any registered user.
The vulnerability can be fixed by updating the 'UserController.php' to strip all event handler attributes from the 'pageDescription' input after using 'strip_tags()' for sanitization. This ensures that injected JavaScript event handlers cannot be executed when the description is rendered.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 30, 2026CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/az10b/security-advisories/blob/main/stored_xss_linkstack.md | [email protected] | AdvisoryExploitRemedy |
| https://github.com/LinkStackOrg/LinkStack/ | [email protected] | ProductVendor |
| https://github.com/LinkStackOrg/LinkStack/pull/974 | [email protected] | Issue TrackingVendor |
| https://vuldb.com/submit/801651 | [email protected] | Permission Required |
| https://vuldb.com/vuln/360311 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/360311/cti | [email protected] | Permission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| LinkStack | <= 4.8.6 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | New CVE Received | [email protected] |