What’s Vulnerable › Vulnerabilities

CVE-2023-6961: WP Meta SEO <= 4.5.12 - Unauthenticated Stored Cross-Site Scripting via Referer header

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-02 · updated 2026-06-17
• Weakness: CWE-79

Description

The WP Meta SEO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘Referer’ header in all versions up to, and including, 4.5.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• joomunited WP Meta SEO: before 4.5.13 — fixed in 4.5.13

How to fix

Upgrade to a fixed version: joomunited WP Meta SEO 4.5.13. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3071453%40wp-meta-seo%2Ftrunk&old=3068145%40wp-meta-seo%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ca91e41d-b728-4eb0-86d5-043813d8c2c1?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3071453%40wp-meta-seo%2Ftrunk&old=3068145%40wp-meta-seo%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ca91e41d-b728-4eb0-86d5-043813d8c2c1?source=cve

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