emrevona WP Fastest Cache Plugin up to 1.5.0 on WordPress cross site scripting

Summaryinfo

A vulnerability was found in emrevona WP Fastest Cache Plugin up to 1.5.0. It has been classified as problematic. This vulnerability affects unknown code. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2026-19760. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in emrevona WP Fastest Cache Plugin up to 1.5.0. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

The WP Fastest Cache – WordPress Cache Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via HTTP Host Header in all versions up to, and including, 1.5.0 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. This requires the Polylang or Polylang Pro plugin to be active and the Combine JS option to be enabled, as these conditions trigger the vulnerable Host-header-to-URL code path that writes attacker-controlled script src values into the shared page-cache file served to all subsequent visitors.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-19760 since 08/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• emrevona

Name

• WP Fastest Cache Plugin

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5.0

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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