CVE-2025-5926: Link Shield <= 0.5.4 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Severity: medium (CVSS 6.1 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: 2025-06-13 · updated 2026-06-17
Weakness: CWE-352

Description

The Link Shield plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5.4. This is due to missing or incorrect nonce validation on the link_shield_menu_options() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

jconti Link Shield: through 0.5.4

References

https://plugins.trac.wordpress.org/browser/link-shield/trunk/link-shield.php#L24
https://www.wordfence.com/threat-intel/vulnerabilities/id/7e577828-4368-4781-877b-badb4dc50763?source=cve

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