CVE-2026-53742: Simple Link Directory through 9.0.4 Stored XSS via Embed Shortcode Attributes

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-10 · updated 2026-07-23
Weakness: CWE-79

Description

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 executing in a viewer's browser.

Affected products

quantumcloud Simple Link Directory: through 9.0.4

References

https://wordpress.org/plugins/simple-link-directory/
https://www.vulncheck.com/advisories/simple-link-directory-through-stored-xss-via-embed-shortcode-attributes

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