SB2026041526 - Cross-site scripting in AVideo

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2026-27568)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary script in a victim's browser.

The vulnerability exists due to improper neutralization of input during web page generation in the Markdown comment rendering functionality when processing Markdown comments containing javascript: links. A remote user can post a specially crafted comment to execute arbitrary script in a victim's browser.

User interaction is required when another user clicks the crafted link.

Remediation

Install update from vendor's website.

References

• https://github.com/WWBN/AVideo/security/advisories/GHSA-rcqw-6466-3mv7
• https://github.com/advisories/GHSA-rcqw-6466-3mv7