Main Vulnerability Database Vulnerabilities #VU122441

Cross-site scripting in Asterisk Open Source and Certified Asterisk - CVE-2026-23738

Published: February 6, 2026

Vulnerability identifier: #VU122441

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

CVE-ID: CVE-2026-23738

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to the "/httpstatus" page echos cookies and query string without sanitization. A remote attacker can trick the victim to follow a specially crafted link 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.

Affected software

Asterisk Open Source
Certified Asterisk

How to mitigate CVE-2026-23738

Install updates from vendor's website.

Asterisk Open Source - addressed in versions 20.18.2, 21.12.1, 22.8.2, 23.2.2
Certified Asterisk - update to 20.7-cert9

External References

https://github.com/asterisk/asterisk/security/advisories/GHSA-v6hp-wh3r-cwxh

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