{"id":"UBUNTU-CVE-2026-67591","details":"An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.","modified":"2026-08-07T17:45:27.122162431Z","published":"2026-08-05T07:16:00Z","upstream":["CVE-2026-67591"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-67591"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-67591"},{"type":"REPORT","url":"https://lists.apache.org/thread/rwmggh2bkm6qotxpdfcplht3jgw5n036"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/08/04/30"}],"affected":[{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7-2","0.10-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libqpid-proton2","binary_version":"0.10-2"},{"binary_name":"libqpid-proton2-dev-examples","binary_version":"0.10-2"},{"binary_name":"python-qpid-proton","binary_version":"0.10-2"},{"binary_version":"0.10-2","binary_name":"python3-qpid-proton"},{"binary_name":"qpid-proton-dump","binary_version":"0.10-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}},{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-5.1","0.14.0-5.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqpid-proton-cpp8","binary_version":"0.14.0-5.1ubuntu1"},{"binary_version":"0.14.0-5.1ubuntu1","binary_name":"libqpid-proton8"},{"binary_version":"0.14.0-5.1ubuntu1","binary_name":"libqpid-proton8-dev-examples"},{"binary_version":"0.14.0-5.1ubuntu1","binary_name":"python-qpid-proton"},{"binary_name":"python3-qpid-proton","binary_version":"0.14.0-5.1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}},{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.22.0-3.2","0.22.0-3.2build1","0.22.0-3.3","0.22.0-3.3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqpid-proton-cpp12","binary_version":"0.22.0-3.3build1"},{"binary_name":"libqpid-proton11","binary_version":"0.22.0-3.3build1"},{"binary_version":"0.22.0-3.3build1","binary_name":"libqpid-proton11-dev-examples"},{"binary_name":"python3-qpid-proton","binary_version":"0.22.0-3.3build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}},{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.22.0-5.1","0.22.0-5.1build1","0.22.0-5.1ubuntu1","0.22.0-5.1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libqpid-proton-cpp12","binary_version":"0.22.0-5.1ubuntu2"},{"binary_name":"libqpid-proton11","binary_version":"0.22.0-5.1ubuntu2"},{"binary_version":"0.22.0-5.1ubuntu2","binary_name":"libqpid-proton11-dev-examples"},{"binary_version":"0.22.0-5.1ubuntu2","binary_name":"python3-qpid-proton"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}},{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.37.0-2build1","0.37.0-2build2","0.37.0-2build4","0.37.0-2build5"],"ecosystem_specific":{"binaries":[{"binary_version":"0.37.0-2build5","binary_name":"libqpid-proton-cpp12"},{"binary_version":"0.37.0-2build5","binary_name":"libqpid-proton11"},{"binary_version":"0.37.0-2build5","binary_name":"libqpid-proton11-dev-examples"},{"binary_version":"0.37.0-2build5","binary_name":"python3-qpid-proton"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}},{"package":{"name":"qpid-proton","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/qpid-proton?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.37.0-6","0.37.0-6build1","0.37.0-7","0.37.0-7build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqpid-proton-cpp12","binary_version":"0.37.0-7build1"},{"binary_name":"libqpid-proton11","binary_version":"0.37.0-7build1"},{"binary_version":"0.37.0-7build1","binary_name":"libqpid-proton11-dev-examples"},{"binary_version":"0.37.0-7build1","binary_name":"python3-qpid-proton"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67591.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}