UBUNTU-CVE-2026-46334 (CVE-2026-46334)
Vulnerability from osv_ubuntu – Published: 2026-08-05 00:17 – Updated: 2026-08-05 00:17 – Source website
VLAI
Details
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.6.6 and 4.0.0-rc1 contain a denial of service vulnerability in the SDP bandwidth-line parsing logic. A SIP request with Content-Type: application/sdp and a malformed session-level SDP bandwidth line missing the required colon delimiter can corrupt parsed SDP bandwidth metadata. When a route or module subsequently clones the corrupted SDP state, as occurs with dialog and QoS processing, the OpenSIPS worker process crashes. An unauthenticated remote attacker can therefore trigger a crash in any configuration whose routing script parses attacker-controlled SDP and applies dialog/QoS processing. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.
Severity
N/A (UNKNOWN)
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "opensips",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-b2bua-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-berkeley-bin",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-berkeley-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-carrierroute-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-compression-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-console",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-cpl-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-dbhttp-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-dialplan-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-emergency-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-geoip-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-http-modules",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-identity-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-jabber-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-json-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-ldap-modules",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-lua-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-memcached-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-mysql-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-perl-modules",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-postgres-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-presence-modules",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-rabbitmq-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-radius-modules",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-redis-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-regex-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-restclient-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-sctp-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-snmpstats-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-sqlite-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-tls-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-tlsmgm-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-unixodbc-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-wss-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-xmlrpc-module",
"binary_version": "2.2.2-3build4"
},
{
"binary_name": "opensips-xmpp-module",
"binary_version": "2.2.2-3build4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "opensips",
"purl": "pkg:deb/ubuntu/opensips@2.2.2-3build4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.2-3build2",
"2.2.2-3build3",
"2.2.2-3build4"
]
}
],
"aliases": [],
"details": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.6.6 and 4.0.0-rc1 contain a denial of service vulnerability in the SDP bandwidth-line parsing logic. A SIP request with Content-Type: application/sdp and a malformed session-level SDP bandwidth line missing the required colon delimiter can corrupt parsed SDP bandwidth metadata. When a route or module subsequently clones the corrupted SDP state, as occurs with dialog and QoS processing, the OpenSIPS worker process crashes. An unauthenticated remote attacker can therefore trigger a crash in any configuration whose routing script parses attacker-controlled SDP and applies dialog/QoS processing. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.",
"id": "UBUNTU-CVE-2026-46334",
"modified": "2026-08-05T00:17:00Z",
"published": "2026-08-05T00:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-46334"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46334"
},
{
"type": "REPORT",
"url": "https://github.com/OpenSIPS/opensips/commit/8fe74b01f6fbf86c0b5e290735275530cb65e0fb"
},
{
"type": "REPORT",
"url": "https://github.com/OpenSIPS/opensips/commit/ac5309d5b8206cd3dbe1b4e01567c8db1ce31444"
},
{
"type": "REPORT",
"url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-rh36-mhpv-cx2r"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-46334"
]
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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