CVE-2026-88868
Deferred Deferred - Pending Action

Stored XSS in AVideo LiveLinks Plugin

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: VulnCheck

Description
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LiveLinks plugin where title and description fields are stored without sanitization. A user with canStream permission can inject malicious scripts that execute in the browser of every visitor viewing the live-link page, including administrators, within the site origin.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-10
AI Q&A
2026-09-10
EPSS Evaluated
N/A
NVD
CVE-2026-88868
EUVD
EUVD-2026-75418

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wwbn avideo to commit_c3edcc274c389816d434acadac07ee78eaf330c1 (inc)
avideo live_links *

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.

Attack-Flow Graph

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Executive Summary

CVE-2026-88868 is a stored cross-site scripting (XSS) vulnerability in the AVideo LiveLinks plugin. It occurs because user input in title and description fields is stored without sanitization and later rendered in HTML pages without escaping. An attacker with canStream permission can inject malicious scripts that execute in the browsers of all visitors viewing the live-link page, including administrators.

Detection Guidance

To detect this vulnerability, inspect the LiveLinks plugin in AVideo for unsanitized title and description fields. Check if the LiveLinksTable class stores user input without sanitization and if Live.php interpolates this data without escaping. Look for malicious scripts in stored content, such as <img src=x onerror=alert(document.domain)>.

Impact Analysis
  • Malicious scripts can steal session cookies or sensitive data from users viewing the live-link page.
  • Attackers may execute unauthorized actions on behalf of victims, such as modifying content or accessing restricted areas.
  • Administrators viewing the page are also affected, potentially leading to full site compromise.
Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face compliance violations, fines, or legal consequences if user data is compromised through this flaw.

Mitigation Strategies

Disable the LiveLinks plugin if not required. If enabled, ensure the onlyAdminCanAddLinks setting is set to true to restrict who can add links. Apply input sanitization to title and description fields in the LiveLinksTable class. Monitor for suspicious activity or unauthorized script execution in live-link pages.

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