CVE-2026-23738 LOW

CVE-2026-23738: The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Vendor Asterisk
Product asterisk
Weakness CWE-79 · XSS
Published February 6, 2026
Last update February 6, 2026
View on NVD All CVEs

CVSS base score

3.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using ast_str_append. The endpoint at GET /httpstatus is the potential vulnerable endpoint relating to asterisk/main /http.c. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.

Key dates

02Disclosure timeline

February 6, 2026 CVE published
February 6, 2026 Record updated