Stored Cross-Site Scripting in AVideo Bookmark Plugin
CVE-2026-89256

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89256?

AVideo's Bookmark plugin contains a stored cross-site scripting vulnerability where chapter names are improperly handled. This oversight allows an attacker to inject malicious scripts through the bookmark name parameter, potentially impacting all visitors who access the video and execute the payload in the AVideo environment. It is vital for administrators to review and mitigate these security loopholes to protect users from exploitation.

Affected Version(s)

AVideo 0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-j...
vendor-advisory
https://www.vulncheck.com/advisories/avideo-bookmark-plug...
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
.