CVE-2026-15889
Deferred Deferred - Pending Action

Stored XSS in Aruba HiSpeed Cache WordPress Plugin

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: Wordfence

Description
The Aruba HiSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Content in all versions up to, and including, 3.0.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-30
AI Q&A
2026-09-10
EPSS Evaluated
2026-09-29
NVD
CVE-2026-15889
EUVD
EUVD-2026-75366

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
aruba hisped_cache to 3.0.14 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

The Aruba HiSpeed Cache plugin for WordPress has a stored cross-site scripting vulnerability due to insufficient input sanitization and output escaping. This allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into web pages. These scripts execute when users view the affected pages.

Detection Guidance

This vulnerability requires checking WordPress sites with the Aruba HiSpeed Cache plugin installed. Inspect plugin versions and review user-contributed content for suspicious scripts. No specific commands are provided in the context.

Impact Analysis

This vulnerability allows attackers to inject malicious scripts into your WordPress site. If exploited, these scripts can steal user data, hijack sessions, or perform actions on behalf of users. It requires authenticated access but can affect all visitors to the compromised pages.

Compliance Impact

This vulnerability could lead to data breaches, compromising user data and violating privacy regulations like GDPR or HIPAA. If exploited, it may result in unauthorized access to sensitive information, leading to legal penalties and reputational damage.

Mitigation Strategies

Update the Aruba HiSpeed Cache plugin to the latest version beyond 3.0.14. Remove Contributor-level access for untrusted users until patched. Monitor pages for unexpected script injections.

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