{"id":"UBUNTU-CVE-2026-57196","details":"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.","modified":"2026-10-28T20:17:47.815472690Z","published":"2026-10-26T20:17:00Z","upstream":["CVE-2026-57196"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-57196"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-57196"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/4373f8174bf71c467fc9db96036126d30425b9e8"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/4b360a61d649a7c12b1021aa554642322ee28c10"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/60c23d8b56b2cf93caceb527e07654b16f388343"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/87399593cda601ae3670bf890bdb32f78e881bf3"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/9cff8e62fbd9e7db87c233de3335047df88877d0"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/dc43c5b32a3a216da4c9e95388fbadaca3e78bc8"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/e6998409f73f49959d0062c695bb9a2f611af5ac"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/security/advisories/ghsa-4pgv-j3mr-3rcp"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1"},{"type":"REPORT","url":"https://github.com/cveproject/cvelistv5/tree/main/cves/2026/57xxx/cve-2026-57196.json"},{"type":"REPORT","url":"https://nvd.nist.gov/vuln/detail/cve-2026-57196"}],"affected":[{"package":{"name":"asterisk","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:13.1.0~dfsg-1.1ubuntu3","1:13.1.0~dfsg-1.1ubuntu4","1:13.1.0~dfsg-1.1ubuntu4.1","1:13.1.0~dfsg-1.1ubuntu4.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-config","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1","binary_name":"asterisk-dahdi"},{"binary_name":"asterisk-mobile","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-modules","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-mp3","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-mysql","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-ooh323","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1","binary_name":"asterisk-voicemail"},{"binary_name":"asterisk-voicemail-imapstorage","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-voicemail-odbcstorage","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-vpb","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:13.17.2~dfsg-1ubuntu1","1:13.17.2~dfsg-2ubuntu1","1:13.18.1~dfsg-1ubuntu1","1:13.18.3~dfsg-1ubuntu1","1:13.18.3~dfsg-1ubuntu2","1:13.18.3~dfsg-1ubuntu3","1:13.18.3~dfsg-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-config"},{"binary_name":"asterisk-dahdi","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-mobile","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-modules","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-mp3","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-mysql"},{"binary_name":"asterisk-ooh323","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-tests","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-voicemail"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-voicemail-imapstorage"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-voicemail-odbcstorage"},{"binary_name":"asterisk-vpb","binary_version":"1:13.18.3~dfsg-1ubuntu4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:16.2.1~dfsg-2build2","1:16.2.1~dfsg-2build3","1:16.2.1~dfsg-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-config"},{"binary_name":"asterisk-dahdi","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-mobile"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-modules"},{"binary_name":"asterisk-mp3","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-mysql","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-ooh323","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-tests"},{"binary_name":"asterisk-voicemail","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-voicemail-imapstorage","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-voicemail-odbcstorage"},{"binary_version":"1:16.2.1~dfsg-2ubuntu1","binary_name":"asterisk-vpb"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:16.16.1~dfsg-2","1:16.16.1~dfsg-4","1:16.16.1~dfsg-4build1","1:16.16.1~dfsg+~2.10-1","1:18.10.0~dfsg+~cs6.10.40431411-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2","binary_name":"asterisk"},{"binary_name":"asterisk-config","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"},{"binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2","binary_name":"asterisk-dahdi"},{"binary_name":"asterisk-mobile","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"},{"binary_name":"asterisk-modules","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"},{"binary_name":"asterisk-mp3","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"},{"binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2","binary_name":"asterisk-mysql"},{"binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2","binary_name":"asterisk-ooh323"},{"binary_name":"asterisk-tests","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"},{"binary_name":"asterisk-vpb","binary_version":"1:18.10.0~dfsg+~cs6.10.40431411-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:20.4.0~dfsg+~cs6.13.40431414-2","1:20.5.0~dfsg+~cs6.13.40431414-1","1:20.5.1~dfsg+~cs6.13.40431414-1","1:20.5.2~dfsg+~cs6.13.40431414-1","1:20.6.0~dfsg+~cs6.13.40431414-1","1:20.6.0~dfsg+~cs6.13.40431414-2","1:20.6.0~dfsg+~cs6.13.40431414-2build3","1:20.6.0~dfsg+~cs6.13.40431414-2build4","1:20.6.0~dfsg+~cs6.13.40431414-2build5"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5","binary_name":"asterisk-config"},{"binary_name":"asterisk-dahdi","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-mobile","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-modules","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-mp3","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-mysql","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-ooh323","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"},{"binary_name":"asterisk-tests","binary_version":"1:20.6.0~dfsg+~cs6.13.40431414-2build5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:22.5.2~dfsg+~cs6.15.60671435-1","1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu2","1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-config","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-dahdi","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-mobile","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-modules","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3","binary_name":"asterisk-mp3"},{"binary_name":"asterisk-mysql","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-ooh323","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"},{"binary_name":"asterisk-tests","binary_version":"1:22.10.0+dfsg+~cs6.17.60671434-1ubuntu3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:22.5.2~dfsg+~cs6.15.60671435-1"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1"},{"binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1","binary_name":"asterisk-config"},{"binary_name":"asterisk-dahdi","binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1"},{"binary_name":"asterisk-mobile","binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1"},{"binary_name":"asterisk-modules","binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1"},{"binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1","binary_name":"asterisk-mp3"},{"binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1","binary_name":"asterisk-mysql"},{"binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1","binary_name":"asterisk-ooh323"},{"binary_name":"asterisk-tests","binary_version":"1:22.5.2~dfsg+~cs6.15.60671435-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57196.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}