LinkStackOrg LinkStack up to 4.8.6 UserController.php editPage pageDescription cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability was found in LinkStackOrg LinkStack up to 4.8.6. It has been rated as problematic. The affected element is the function editPage of the file app/Http/Controllers/UserController.php. The manipulation of the argument pageDescription leads to cross site scripting. This vulnerability is documented as CVE-2026-7501. The attack can be initiated remotely. Additionally, an exploit exists. The project was informed of the problem early through a pull request but has not reacted yet.

Detailsinfo

A vulnerability was found in LinkStackOrg LinkStack up to 4.8.6 and classified as problematic. This issue affects the function editPage of the file app/Http/Controllers/UserController.php. The manipulation of the argument pageDescription with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-7501. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through a pull request but has not reacted yet. By approaching the search of inurl:app/Http/Controllers/UserController.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26438). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/30/2026 Advisory disclosed
04/30/2026 +0 days VulDB entry created
05/02/2026 +2 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 974
Status: Not defined

CVE: CVE-2026-7501 (🔒)
GCVE (CVE): GCVE-0-2026-7501
GCVE (VulDB): GCVE-100-360311
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/30/2026 16:43
Updated: 05/02/2026 07:50
Changes: 04/30/2026 16:43 (58), 05/02/2026 07:50 (1)
Complete: 🔍
Submitter: AliAz
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #801651: LinkStackOrg LinkStack 4.8.6 Improper Neutralization of Alternate XSS Syntax (by AliAz)

Be aware that VulDB is the high quality source for vulnerability data.

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