RCE in Linkstackorg Linkstack
CVE-2026-7501
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (26.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001
Affected products
- Linkstackorg Linkstack — versions 4.8.0, 4.8.1, 4.8.2
Weakness classification (CWE)
References
- vuldb.com/vuln/360311 (technical-description, vdb-entry)
- vuldb.com/vuln/360311/cti (signature, permissions-required)
- vuldb.com/submit/801651 (third-party-advisory)
- github.com/LinkStackOrg/LinkStack/pull/974 (issue-tracking, patch)
- github.com/az10b/security-advisories/blob/main/stored_xss_linkstack.md (exploit)
- github.com/LinkStackOrg/LinkStack/ (product)
Frequently asked questions
- What is CVE-2026-7501?
- CVE-2026-7501 is a low-severity vulnerability in Linkstackorg Linkstack, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-30.
- How severe is CVE-2026-7501?
- Low severity. CVSS v3 base score is 3.5 out of 10.