{"id":"CVE-2026-105818","revision":null,"records":[{"revision":"9c566510d5944ec59fc1ce49c6daec03","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-105818","aliases":[],"title":"Vault PKI ACME Issues Certificate With Unvalidated SANs","description":"Vault's PKI secrets engine ACME server did not restrict certificate identities that ACME challenges do not validate when issuing certificates under the default directory policy. This may allow an ACME client to obtain a certificate containing unverified identity claims, potentially enabling impersonation toward systems that trust certificates issued by the affected Vault PKI mount. This vulnerability (CVE-2026-105818) is fixed in Vault Community Edition\u00A02.1.2, and Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23.","state":0,"publishedAt":"2026-10-07T21:21:05.675+00:00","modifiedAt":"2026-10-08T17:07:02.834+00:00","affected":[{"ecosystem":"Vendor product","name":"Vault","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"64 bit\",\n                        \"32 bit\",\n                        \"x86\",\n                        \"ARM\",\n                        \"MacOS\",\n                        \"Windows\",\n                        \"Linux\"\n                    ],\n                    \"product\": \"Vault\",\n                    \"repo\": \"https://github.com/hashicorp/vault\",\n                    \"vendor\": \"HashiCorp\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"2.1.2\",\n                            \"status\": \"affected\",\n                            \"version\": \"1.14.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Vault Enterprise","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"64 bit\",\n                        \"32 bit\",\n                        \"x86\",\n                        \"ARM\",\n                        \"MacOS\",\n                        \"Windows\",\n                        \"Linux\"\n                    ],\n                    \"product\": \"Vault Enterprise\",\n                    \"repo\": \"https://github.com/hashicorp/vault\",\n                    \"vendor\": \"HashiCorp\",\n                    \"versions\": [\n                        {\n                            \"changes\": [\n                                {\n                                    \"at\": \"1.21.12\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.20.17\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"1.19.23\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"lessThan\": \"2.1.2\",\n                            \"status\": \"affected\",\n                            \"version\": \"1.14.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-40-vault-pki-acme-default-directory-policy-may-issue-certificates-with-unverified-identities/77812"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105818","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-105818","identifiers":["CVE-2026-105818"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-10T17:24:49.2932543+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-10T17:24:49.2932543+00:00","lastSuccessAt":"2026-11-10T17:24:49.4591165+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:49.4591192+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-8859cf40d4337e24bd2f258cc7778fbad01bb24c79d057aaf34cf1dfc6f8917d-c04d91b13c9128b20b85238adce4026f513a7f30cff28d5a67ae355d34d58b2b","complete":true,"records":422146,"lastAttemptAt":"2026-11-10T17:21:30.71186+00:00","lastSuccessAt":"2026-11-10T17:21:30.5671236+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:21:30.71186+00:00","snapshotPublishedAt":"2026-11-10T16:28:30+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-d0c54bf27dd44f59b652d410e8e55def","complete":true,"records":13704,"lastAttemptAt":"2026-11-10T17:24:58.2594049+00:00","lastSuccessAt":"2026-11-10T16:26:03.716+00:00","error":null,"lastVerifiedAt":"2026-11-10T16:26:03.716+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13758,"expectedIdentifiers":13758,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-10T17:24:49.2932543+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-10T17:24:49.2932543+00:00","lastSuccessAt":"2026-11-10T17:24:49.459896+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:49.4598962+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-059a952fa5b34452ba3a4ff42f04741b","complete":true,"records":13710,"lastAttemptAt":"2026-11-10T17:24:57.2351467+00:00","lastSuccessAt":"2026-11-10T17:24:57.231+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:57.231+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13758,"expectedIdentifiers":13758,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-50a085e5b7a5d1546eabdb7e52fab85d658afa8554d3cf95a0891c49d83f2979","complete":true,"records":9935,"lastAttemptAt":"2026-11-10T17:24:49.1476899+00:00","lastSuccessAt":"2026-11-10T16:25:20.0114252+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:49.1476899+00:00","snapshotPublishedAt":"2026-11-10T16:18:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-10T17:21:30.7782647+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:21:30.7782647+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-df497239f2f75af38e095cb498791dad4044a8a9a7f5f0ee6008bb732579ab9d","complete":true,"records":3081,"lastAttemptAt":"2026-11-10T17:24:49.2499106+00:00","lastSuccessAt":"2026-11-10T14:21:34.3717399+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:49.2499106+00:00","snapshotPublishedAt":"2026-11-10T14:18:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-82794ed9d128b3d2f332e24d4ecbf30e5b7d49fb88ff3791fdf7516fda05c8c9","complete":true,"records":231614,"lastAttemptAt":"2026-11-10T17:24:49.0209485+00:00","lastSuccessAt":"2026-11-10T17:24:47.5089691+00:00","error":null,"lastVerifiedAt":"2026-11-10T17:24:49.0209485+00:00","snapshotPublishedAt":"2026-11-10T16:33:23+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}