low3.5
CVE-2026-23738
Asterisk is an open source private branch exchange and telephony toolkit.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sangoma | Asterisk | through 20.18.2 from 21.0.0 through 21.12.1 from 22.0.0 through 22.8.2 from 23.0.0 before 23.2.2 |
| Sangoma | Certified Asterisk | through 18.9 Version 20.7 |