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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.

PUBLISHED Reserved 2026-04-30 | Published 2026-04-30 | Updated 2026-05-01 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.5CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
LOW: 3.5CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Cross Site Scripting

Code Injection

Product status

4.8.0
affected

4.8.1
affected

4.8.2
affected

4.8.3
affected

4.8.4
affected

4.8.5
affected

4.8.6
affected

Timeline

2026-04-30:Advisory disclosed
2026-04-30:VulDB entry created
2026-04-30:VulDB entry last update

Credits

AliAz (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/360311 (VDB-360311 | LinkStackOrg LinkStack UserController.php editPage cross site scripting) vdb-entry technical-description

vuldb.com/vuln/360311/cti (VDB-360311 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/801651 (Submit #801651 | LinkStackOrg LinkStack 4.8.6 Improper Neutralization of Alternate XSS Syntax) third-party-advisory

github.com/LinkStackOrg/LinkStack/pull/974 issue-tracking patch

github.com/...y-advisories/blob/main/stored_xss_linkstack.md exploit

github.com/LinkStackOrg/LinkStack/ product

cve.org (CVE-2026-7501)

nvd.nist.gov (CVE-2026-7501)

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