What’s Vulnerable › Vulnerabilities

CVE-2026-3620: Word Replacer <= 0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Replacement' Parameter

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-02 · updated 2026-07-22
• Weakness: CWE-20

Description

The Word Replacer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'replacement' parameter in all versions up to, and including, 0.4. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• takien Word Replacer: through 0.4

References

• https://plugins.trac.wordpress.org/browser/word-replacer/tags/0.4/word-replacer.php#L191
• https://plugins.trac.wordpress.org/browser/word-replacer/tags/0.4/word-replacer.php#L230
• https://plugins.trac.wordpress.org/browser/word-replacer/tags/0.4/word-replacer.php#L339
• https://plugins.trac.wordpress.org/browser/word-replacer/tags/0.4/word-replacer.php#L343
• https://plugins.trac.wordpress.org/browser/word-replacer/trunk/word-replacer.php#L191
• https://plugins.trac.wordpress.org/browser/word-replacer/trunk/word-replacer.php#L230
• https://plugins.trac.wordpress.org/browser/word-replacer/trunk/word-replacer.php#L339
• https://plugins.trac.wordpress.org/browser/word-replacer/trunk/word-replacer.php#L343
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b827f0e1-b8ee-4015-a608-45505f43b324?source=cve

Get alerted when CVE-2026-3620 or the next vulnerability affects your stack