CVE-2026-23738

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

State: Published
Severity: 3.5 Low
Published: Feb 6, 2026
Updated: Feb 6, 2026
Reserved: Jan 15, 2026

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Description

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.

Scores

CVSS	Score	Vector	Source
3.1	3.5 Low	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
asteriskasterisk	< 23.2.2Affected < 22.8.2Affected < 21.12.1Affected < 20.18.2Affected < 20.7-cert9Affected

References

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

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