CVE Catalog

CVE-2026-96578

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

15th percentile - higher than 15% of all known CVEs

Summary

The GSpeech TTS – WordPress Text To Speech Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to and including 3.22.0 due to insufficient input sanitization and output escaping. This mXSS-style transform bypasses WordPress comment kses sanitization because the payload is stored using only kses-allowed tags and attributes; the malicious event handlers and style fragments become active only when the plugin's output-buffer callback rewrites the rendered HTML at request time.

Risk Assessment

An unauthenticated attacker can inject malicious scripts that execute in the browser of users visiting affected pages, potentially leading to data theft or session hijacking.

Recommendation

Update the GSpeech TTS plugin to the latest patched version and consider disabling output-buffer processing if not essential.

Related vulnerabilities

Original NVD description (English source)

The GSpeech TTS – WordPress Text To Speech Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 3.22.0 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 mXSS-style transform bypasses WordPress comment kses sanitization because the payload is stored using only kses-allowed tags and attributes; the malicious event handlers and style fragments become active only when the plugin's output-buffer callback rewrites the rendered HTML at request time.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS