{"id":"CVE-2026-101015","state":"PUBLISHED","title":"Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in input","description":"A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is some unknown functionality of the file policy.c of the component Domain Handler. Executing a manipulation can lead to improper validation of unsafe equivalence in input. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","publishedAt":"2026-09-28T08:30:08.347Z","updatedAt":"2026-10-01T14:10:12.503Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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:*:*:*:*:*:*:*:*"],"modules":["Domain Handler"]}],"references":["https://vuldb.com/vuln/410885","https://vuldb.com/vuln/410885/cti","https://vuldb.com/cve/CVE-2026-101015","https://vuldb.com/submit/917216","https://weitongli.com/share/opendmarc-unicode-dot-bypass.html"],"weaknesses":["CWE-1289","CWE-20"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101015.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101015","state":"PUBLISHED","datePublished":"2026-09-28T08:30:08.347Z","dateUpdated":"2026-10-01T14:10:12.503Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-27T11:33:01.551Z"},"containers":{"cna":{"title":"Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in input","descriptions":[{"lang":"en","value":"A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is some unknown functionality of the file policy.c of the component Domain Handler. Executing a manipulation can lead to improper validation of unsafe equivalence in input. The attack may be launched remotely. The exploit has been published 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:*:*:*:*:*:*:*:*"],"modules":["Domain Handler"]}],"references":[{"url":"https://vuldb.com/vuln/410885","name":"VDB-410885 | Trusted Domain Project OpenDMARC policy.c improper validation of unsafe equivalence in input","tags":["vdb-entry"]},{"url":"https://vuldb.com/vuln/410885/cti","name":"VDB-410885 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-101015","name":"CVE-2026-101015 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/917216","name":"Submit #917216 | The Trusted Domain Project OpenDMARC 1.4.2 Improper Authentication","tags":["third-party-advisory"]},{"url":"https://weitongli.com/share/opendmarc-unicode-dot-bypass.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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":7.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C","baseSeverity":"HIGH"}},{"cvssV3_0":{"version":"3.0","baseScore":7.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C","baseSeverity":"HIGH"}},{"cvssV2_0":{"version":"2.0","baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1289","type":"CWE","lang":"en","description":"Improper Validation of Unsafe Equivalence in Input"}]},{"descriptions":[{"cweId":"CWE-20","type":"CWE","lang":"en","description":"Improper Input Validation"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-28T08:30:08.347Z"},"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":"2026-09-27T13:38:22.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"WeitongLi (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":"2026-10-01T14:09:50.063007Z","id":"CVE-2026-101015","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":"2026-10-01T14:10:12.503Z"}}]}}}