CVE-2026-23738
Low
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.
SeverityLow
CVSS3.5
Exploit probability—
ProductSangoma Asterisk
PublishedFeb 6, 2026
First seenFeb 6, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- sangoma asterisk23.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sangoma asterisk | v ≤ 20.18.2, 21.0.0 ≤ v ≤ 21.12.1, 22.0.0 ≤ v ≤ 22.8.2, 23.0.0 ≤ v < 23.2.2 | 23.2.2 |
| sangoma certified_asterisk | v ≤ 18.9, 20.7 | — |
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