Stored Cross-Site Scripting Risk in AVideo's LoginControl Plugin
CVE-2026-89255

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89255?

The AVideo LoginControl plugin is subject to a serious stored cross-site scripting vulnerability. This occurs when an authenticated user submits a specially crafted PGP public key that is not properly HTML-encoded when rendered in a textarea element. As a result, the injected malicious JavaScript can execute in the administrator's session, particularly when the profile tab is viewed. This can lead to unauthorized actions or data exfiltration if successfully exploited.

Affected Version(s)

AVideo 0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-g...
vendor-advisory
https://www.vulncheck.com/advisories/avideo-logincontrol-...
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
.