Stored Cross-Site Scripting in AVideo by WWBN
CVE-2026-89253

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89253?

AVideo by WWBN contains a vulnerability in the user donation link profile field, enabling stored cross-site scripting attacks. The flaw allows authenticated users to inject malicious JavaScript through the donation link. When the CustomizeUser option 'allowDonationLink' is enabled, an attacker can exploit this vulnerability by updating their profile, leading to the execution of JavaScript in the browsers of those who view their videos, including administrators. This vulnerability can be exploited to compromise sensitive information as it bypasses basic validation checks, posing a serious risk to users engaging with the affected functionality.

Affected Version(s)

AVideo 0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-3...
vendor-advisory
https://www.vulncheck.com/advisories/avideo-stored-xss-vi...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

santhreal
.