What’s Vulnerable › Vulnerabilities

CVE-2026-1379: HTTP Headers <= 1.19.2 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Custom Headers' Plugin Setting

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The HTTP Headers plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.19.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• zinoui HTTP Headers: through 1.19.2

References

• https://plugins.trac.wordpress.org/browser/http-headers/tags/1.19.2/views/manual.php#L18
• https://plugins.trac.wordpress.org/browser/http-headers/trunk/views/manual.php#L18
• https://www.wordfence.com/threat-intel/vulnerabilities/id/02e63068-02a8-4106-b64e-430c24815e55?source=cve

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