CVE-2026-57196Low· 2.3▾ SunlitAsterisk 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 script…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 12.6 · likelihood 0.2 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.8%
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.
asterisk < 20.20.1asterisk >= 21.0.0-pre1, < 21.12.3asterisk >= 22.0.0-pre1, < 22.10.1asterisk >= 23.0.0-pre1, < 23.4.1certified-asterisk < 20.7-cert11certified-asterisk >= 22.8-cert1-pre1, < 22.8-cert3Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-57188High· 7.1Asterisk: Stack buffer overflow in res_xmpp XMPP namespace prefix handling
CVE-2026-57202High· 8.1Asterisk: ARI setChannelVar bypasses live_dangerously and permits FILE() writes
CVE-2026-57185Medium· 6.5Asterisk: Buffer over-read in Asterisk PJSIP MWI body parser
CVE-2026-57197High· 7.7Asterisk: Heap Buffer Overflow in OGG/Speex File Playback (format_ogg_speex)
CVE-2026-57198Low· 2.3Asterisk: Possible RED T.140 Heap Buffer Overflow
CVE-2026-57194Medium· 5.9Asterisk: chan_unistim DIALPAGE digit handling can overflow phone_number and crash Asterisk