Quick answers
- Is CVE-2026-53742 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-53742 being exploited in the wild.
- How severe is CVE-2026-53742?
- Medium severity, with a CVSS score of 5.4, published 10 June 2026.
- Which products and versions are affected?
- QuantumCloud Simple Link Directory through 9.0.4.
- Is there a fix for CVE-2026-53742?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-53742 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-53742?
- Check whether you run QuantumCloud Simple Link Directory at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stored cross-site scripting (XSS) vulnerability exists in Simple Link Directory through version 9.0.4. The issue stems from the embedder template echoing shortcode attributes directly into HTML data attributes without proper sanitization or escaping. An attacker with contributor-level privileges can craft a malicious shortcode attribute containing an event handler (e.g., onmouseover). When a victim views the page where the shortcode is rendered, the injected script executes in the context of their browser session. This is tracked as CWE-79.
Affected products
- QuantumCloud Simple Link Directory through 9.0.4
Timeline
- 2026-06-10: disclosed
- 2026-06-10: advisory