SB2026060512 - Multiple vulnerabilities in AVideo

Description

This security bulletin contains information about 2 vulnerabilities.

1) Stored cross-site scripting (CVE-ID: CVE-2026-54458)

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

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within "page_title" broadcast in AVideo YPTSocket plugin. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

2) OS Command Injection (CVE-ID: N/A)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows an attacker to execute arbitrary operating system commands on an AVideo server.

The vulnerability exists due to execAsync() wrapping assembled commands in a double-quoted shell invocation that leaves command substitution active despite argument escaping. An attacker can supply command substitution payloads through inputs passed to affected execAsync() callers with only argument escaping, causing injected commands to run and create files on the server.

Remediation

Install update from vendor's website.

References

• https://github.com/WWBN/AVideo/security/advisories/GHSA-8whc-2wmv-ww35
• https://github.com/WWBN/AVideo/security/advisories/GHSA-rc5x-vh5v-473f