UBUNTU-CVE-2026-45809

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Source
https://ubuntu.com/security/CVE-2026-45809
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45809.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45809
Upstream
Published
2026-08-05T00:17:00Z
Modified
2026-08-06T03:09:02Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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 watcherinfo generation functionality. An attacker can create an oversized watcher entry by sending a SUBSCRIBE Event: presence request with a long From URI, and then trigger presence.winfo watcherinfo XML generation for the same presentity. OpenSIPS copies the stored watcher URI into a fixed-size stack buffer, overflowing it and crashing the process. A remote attacker can crash an OpenSIPS worker in deployments that expose handle_subscribe() and allow watcherinfo (presence.winfo) generation. The issue is configuration-dependent because the presence and presence_xml modules must be loaded and SUBSCRIBE routing must be reachable. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.

References

Affected packages

Ubuntu:18.04:LTS / opensips

Package

Name
opensips
Purl
pkg:deb/ubuntu/opensips?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.2.2-3build2
2.2.2-3build3
2.2.2-3build4

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45809.json"