CVE-2026-57200 Asterisk: ARI REST-over-WebSocket read-only bypass allows arbitrary module path load and conditional RCE
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-57200?
CVE-2026-57200 is a high-severity vulnerability in asterisk, published on 27 Oct 2026.
Official description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3, an authenticated attacker with read-only permissions for the `Asterisk REST Interface (ARI)` may, under certain conditions, execute write operations through `REST-over-WebSocket`. The authorization bypass permits `arbitrary module path` loading and conditional remote code execution. The Asterisk HTTP web server must be enabled and reachable, and the attacker must already have valid `read-only ARI credentials`. HTTP is disabled by default and binds only to 127.0.0.1 by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3.
Which versions are affected by CVE-2026-57200?
How do I fix CVE-2026-57200?
Upgrade to a fixed version.
Is CVE-2026-57200 being exploited?
There is no known exploitation of CVE-2026-57200 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-57200, GHSA-wcvv-g26m-wx5c, UBUNTU-CVE-2026-57200.