Vulnerability · Published Oct 27, 2026 · Assigned by GitHub_M
CVE-2026-57200Asterisk: ARI REST-over-WebSocket read-only bypass allows arbitrary module path load and conditional RCE
High 7.5
In plain English
A high-severity path traversal in asterisk from asterisk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | asterisk | 1:22.10.1+dfsg+~cs6.17.60671434-1 | DEBIAN-CVE-2026-57200 |
| Ubuntu:22.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-57200 |
| Ubuntu:24.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-57200 |
| Ubuntu:26.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-57200 |
| Ubuntu:26.10 | asterisk | no fix listed | UBUNTU-CVE-2026-57200 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| asterisk | asterisk | < 20.20.1>= 21.0.0-pre1, < 21.12.3>= 22.0.0-pre1, < 22.10.1>= 23.0.0-pre1, < 23.4.1 |
| certified-asterisk | certified-asterisk | >= 22.8-cert1-pre1, < 22.8-cert3 |
Weakness: CWE-22, CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/asterisk/asterisk/security/advisories/GHSA-wcvv-g26m-wx5c x_refsource_CONFIRM
- https://github.com/asterisk/asterisk/commit/051d29a0d35559e9165bab346de9422e25415533 x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/205c301a0a0b0d013d4ebdf12856ebbc30405350 x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/762b4c9c39b28fa5564112b0f484012298469a6c x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/87641e9b2cd62c998c5283400ba77b61b5b07dd4 x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/9d198a7d16ccba51507dfea6c1ecc511e89d698a x_refsource_MISC
- https://github.com/asterisk/asterisk/commit/c10cdbce072a708060cd38a89d6850808fe6bf46 x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/20.20.1 x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/21.12.3 x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/22.10.1 x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/23.4.1 x_refsource_MISC
- https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 x_refsource_MISC
- https://github.com/asterisk/asterisk/tree/24.0.0-pre1 x_refsource_MISC