What is CVE-2026-53742?

CVE-2026-53742 is a medium-severity vulnerability in Quantumcloud Simple Link Directory, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-10.

How severe is CVE-2026-53742?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Quantumcloud Simple Link Directory

CVE-2026-53742

Simple Link Directory through 9.0.4 echoes embed shortcode attributes into HTML data attributes without escaping in the embedder template. Attackers with contributor access can craft a shortcode attribute that injects an event handler exec…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (3.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Quantumcloud Simple Link Directory — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-53742?: CVE-2026-53742 is a medium-severity vulnerability in Quantumcloud Simple Link Directory, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-10.
How severe is CVE-2026-53742?: Medium severity. CVSS v3 base score is 5.4 out of 10.