{"id":"UBUNTU-CVE-2026-101277","details":"A security flaw has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. The impacted element is the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Performing a manipulation results in use of less trusted source. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.","modified":"2026-09-30T21:41:53Z","published":"2026-09-29T00:17:00Z","upstream":["CVE-2026-101277"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-101277"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-101277"},{"type":"REPORT","url":"https://vuldb.com/cve/CVE-2026-101277"},{"type":"REPORT","url":"https://vuldb.com/submit/918270"},{"type":"REPORT","url":"https://vuldb.com/vuln/411034"},{"type":"REPORT","url":"https://vuldb.com/vuln/411034/cti"},{"type":"REPORT","url":"https://xuyongzhe-vt.github.io/share/opendkim-tag-parser-desync.html"}],"affected":[{"package":{"name":"opendkim","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.3-3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim10","binary_version":"2.10.3-3build1"},{"binary_name":"librbl1","binary_version":"2.10.3-3build1"},{"binary_name":"libvbr2","binary_version":"2.10.3-3build1"},{"binary_name":"opendkim","binary_version":"2.10.3-3build1"},{"binary_name":"opendkim-tools","binary_version":"2.10.3-3build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101277.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~alpha-10","2.11.0~alpha-11","2.11.0~alpha-11build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~alpha-11build1"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"librbl1"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"libvbr2"},{"binary_version":"2.11.0~alpha-11build1","binary_name":"opendkim"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~alpha-11build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101277.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~alpha-12","2.11.0~alpha-13","2.11.0~alpha-14","2.11.0~beta2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-1"},{"binary_name":"librbl1","binary_version":"2.11.0~beta2-1"},{"binary_version":"2.11.0~beta2-1","binary_name":"libvbr2"},{"binary_name":"opendkim","binary_version":"2.11.0~beta2-1"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101277.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-4build1","2.11.0~beta2-5","2.11.0~beta2-6"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-6"},{"binary_version":"2.11.0~beta2-6","binary_name":"librbl1"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-6"},{"binary_version":"2.11.0~beta2-6","binary_name":"miltertest"},{"binary_version":"2.11.0~beta2-6","binary_name":"opendkim"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101277.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-8","2.11.0~beta2-9","2.11.0~beta2-9build3","2.11.0~beta2-9build4"],"ecosystem_specific":{"binaries":[{"binary_name":"libopendkim11","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"librbl1","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-9build4"},{"binary_version":"2.11.0~beta2-9build4","binary_name":"miltertest"},{"binary_name":"opendkim","binary_version":"2.11.0~beta2-9build4"},{"binary_name":"opendkim-tools","binary_version":"2.11.0~beta2-9build4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101277.json"}},{"package":{"name":"opendkim","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/opendkim?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.0~beta2-9.2","2.11.0~beta2-9.2build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.11.0~beta2-9.2build1","binary_name":"libopendkim11"},{"binary_version":"2.11.0~beta2-9.2build1","binary_name":"librbl1"},{"binary_name":"libvbr2","binary_version":"2.11.0~beta2-9.2build1"},{"bi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