Bug 2561037 (CVE-2026-57196) - CVE-2026-57196 asterisk: asterisk: User impersonation via reflected cross-site scripting in phone provisioning error pages
Summary: CVE-2026-57196 asterisk: asterisk: User impersonation via reflected cross-sit...
Keywords:
Status: NEW
Alias: CVE-2026-57196
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2564784 2564787 2564790 2564792
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-26 19:32 UTC by OSIDB Bzimport
Modified: 2026-11-02 09:49 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-26 19:32:50 UTC 
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 20.7-cert11, 22.8-cert3, an unauthenticated attacker may use reflected cross-site scripting in `phone provisioning HTTP error pages` to retrieve an authorized user's `AMI session cookie` and impersonate that user when `res_phoneprov` is enabled. The Asterisk HTTP web server, Asterisk Manager Interface (AMI), and AMI access via HTTP must all be enabled; each is disabled by default. The attacker must be able to connect to the HTTP server, which binds only to `127.0.0.1` by default even when enabled, and must convince the authorized user to click a malicious link. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
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