CVE-2026-88793: CWE-79 Cross-Site Scripting (XSS) in YouTube Embed
The YouTube Embed WordPress plugin versions 10.0 through 10.3 contain a Cross-Site Scripting (XSS) vulnerability. This flaw arises because the plugin does not perform authorization checks on a specific AJAX action and relies solely on a nonce exposed on every front-end page. Additionally, it fails to escape stored data before rendering, allowing unauthenticated attackers to inject arbitrary scripts. These scripts execute in the context of any user viewing the affected content, including administrators.
AI Analysis
Technical Summary
CVE-2026-88793 is a high-severity Cross-Site Scripting (CWE-79) vulnerability in the YouTube Embed WordPress plugin versions 10.0 to 10.3. The vulnerability stems from the lack of authorization checks on an AJAX action and improper escaping of stored data before rendering. Attackers can store malicious scripts that execute in the session of any user who views the affected content, potentially compromising confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary web scripts in the context of users viewing the affected content, including administrators. This can lead to full compromise of user sessions, theft of sensitive information, and potential site takeover.
Mitigation Recommendations
No official patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling the affected AJAX functionality or restricting access to trusted users if possible.
CVE-2026-88793: CWE-79 Cross-Site Scripting (XSS) in YouTube Embed
Description
The YouTube Embed WordPress plugin versions 10.0 through 10.3 contain a Cross-Site Scripting (XSS) vulnerability. This flaw arises because the plugin does not perform authorization checks on a specific AJAX action and relies solely on a nonce exposed on every front-end page. Additionally, it fails to escape stored data before rendering, allowing unauthenticated attackers to inject arbitrary scripts. These scripts execute in the context of any user viewing the affected content, including administrators.
CVSS v3.1
Score 8.8high
Affected software
YouTube Embed
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88793 is a high-severity Cross-Site Scripting (CWE-79) vulnerability in the YouTube Embed WordPress plugin versions 10.0 to 10.3. The vulnerability stems from the lack of authorization checks on an AJAX action and improper escaping of stored data before rendering. Attackers can store malicious scripts that execute in the session of any user who views the affected content, potentially compromising confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary web scripts in the context of users viewing the affected content, including administrators. This can lead to full compromise of user sessions, theft of sensitive information, and potential site takeover.
Mitigation Recommendations
No official patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling the affected AJAX functionality or restricting access to trusted users if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-10T08:09:26.182Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa7085055bf5e2cf509bee1
Added to database: 09/13/2026, 20:32:16 UTC
Last enriched: 09/13/2026, 20:46:32 UTC
Last updated: 09/13/2026, 20:53:13 UTC
Views: 5
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