{"id":"CVE-2026-101016","state":"PUBLISHED","title":"Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional condition","description":"A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_policy_parse_dmarc in the library libopendmarc/opendmarc_policy.c. The manipulation of the argument fo/rf/ri/pct/sp/adkim/aspf/rua/ruf leads to handling of exceptional conditions. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","publishedAt":"2026-09-28T08:45:11.087Z","updatedAt":"2026-09-28T10:57:07.856Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Trusted Domain Project OpenDMARC"],"affected":[{"vendor":"Trusted Domain Project","product":"OpenDMARC","versions":[{"version":"1.4.0","status":"affected"},{"version":"1.4.1","status":"affected"},{"version":"1.4.2","status":"affected"}],"cpes":["cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/410886","https://vuldb.com/vuln/410886/cti","https://vuldb.com/cve/CVE-2026-101016","https://vuldb.com/submit/918242","https://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.html"],"weaknesses":["CWE-755"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101016.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101016","state":"PUBLISHED","datePublished":"2026-09-28T08:45:11.087Z","dateUpdated":"2026-09-28T10:57:07.856Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-27T11:33:06.447Z"},"containers":{"cna":{"title":"Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional condition","descriptions":[{"lang":"en","value":"A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_policy_parse_dmarc in the library libopendmarc/opendmarc_policy.c. The manipulation of the argument fo/rf/ri/pct/sp/adkim/aspf/rua/ruf leads to handling of exceptional conditions. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}],"affected":[{"vendor":"Trusted Domain Project","product":"OpenDMARC","versions":[{"version":"1.4.0","status":"affected"},{"version":"1.4.1","status":"affected"},{"version":"1.4.2","status":"affected"}],"cpes":["cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/vuln/410886","name":"VDB-410886 | Trusted Domain Project OpenDMARC opendmarc_policy.c opendmarc_policy_parse_dmarc exceptional condition","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/410886/cti","name":"VDB-410886 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-101016","name":"CVE-2026-101016 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/918242","name":"Submit #918242 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authentication","tags":["third-party-advisory"]},{"url":"https://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.html","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":6.5,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":6.4,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-755","type":"CWE","lang":"en","description":"Handling of Exceptional Conditions"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-28T08:45:11.087Z"},"timeline":[{"time":"2026-09-27T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-27T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-27T13:38:31.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"yongzhe_xu (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202609"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-28T10:56:52.614606Z","id":"CVE-2026-101016","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-28T10:57:07.856Z"}}]}}}