CVE-2026-23738
Last modified
CVE-2026-23738 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Sangoma | Asterisk | <= 20.18.2 | — |
| Sangoma | Asterisk | >= 21.0.0, <= 21.12.1 | — |
| Sangoma | Asterisk | >= 22.0.0, <= 22.8.2 | — |
| Sangoma | Asterisk | >= 23.0.0, < 23.2.2 | — |
| Sangoma | Certified Asterisk | <= 18.9 | — |
| Sangoma | Certified Asterisk | 20.7 | Cert1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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