{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18922", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-05T08:26:17.044Z", "datePublished": "2026-09-07T14:14:53.799Z", "dateUpdated": "2026-09-08T13:04:34.933Z"}, "containers": {"cna": {"title": "389-ds-base: 389-ds-base: sasl plain authentication allows privilege escalation to directory manager via stale identity in cyrus sasl auxiliary property", "metrics": [{"other": {"content": {"value": "Critical", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Directory Server 11.7 E4S for RHEL 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "redhat-ds:11", "defaultStatus": "affected", "versions": [{"version": "8080020260903102346.f969626e", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:directory_server_e4s:11.7::el8"]}, {"vendor": "Red Hat", "product": "Red Hat Directory Server 11.9 for RHEL 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "redhat-ds:11", "defaultStatus": "affected", "versions": [{"version": "8100020260904171440.37ed7c03", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:directory_server:11.9::el8"]}, {"vendor": "Red Hat", "product": "Red Hat Directory Server 12.2 E4S 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"*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Directory Server 12", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "389-ds-base", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:directory_server:12"]}, {"vendor": "Red Hat", "product": "Red Hat Directory Server 13", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "389-ds-base", "defaultStatus": "unaffected", "cpes": ["cpe:/a:redhat:directory_server:13"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:64771", "name": "RHSA-2026:64771", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64776", "name": "RHSA-2026:64776", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64778", 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"tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64790", "name": "RHSA-2026:64790", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64791", "name": "RHSA-2026:64791", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64792", "name": "RHSA-2026:64792", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64793", "name": "RHSA-2026:64793", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64804", "name": "RHSA-2026:64804", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:64811", "name": "RHSA-2026:64811", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-18922", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511388", "name": "RHBZ#2511388", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-09-07T12:33:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "description": "Improper Authentication", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-287: Improper Authentication", "workarounds": [{"lang": "en", "value": "Administrators can restrict nsslapd-allowed-sasl-mechanisms to only the mechanisms actually required (e.g. GSSAPI, EXTERNAL, GSS-SPNEGO), excluding PLAIN. Since the exploit chain requires the first bind attempt to be a failed SASL PLAIN bind as cn=Directory Manager, removing PLAIN from the allowed mechanism list prevents that step entirely \u2014 this blocks both the originally reported variant (valid low-privileged account) and the zero-credential SASL ANONYMOUS variant, since both depend on the same initial PLAIN bind to plant the stale identity."}], "timeline": [{"lang": "en", "time": "2026-07-30T09:58:58.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-07T12:33:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Chris Jarrett-Davies (OpenAI Security Research) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-08T07:56:35.381Z"}, "x_generator": {"engine": "cvelib 1.8.0"}, "x_gcve": [{"vulnId": "CVE-2026-18922", "recordType": "advisory"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-08T13:04:02.842508Z", "id": "CVE-2026-18922", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-08T13:04:34.933Z"}}]}, "vulnerability-lookup:meta": {"epss": {"cve": "CVE-2026-18922", "date": "2026-10-06", "epss": "0.0056", "percentile": "0.44768"}, "nvd": "{\"cve\":{\"id\":\"CVE-2026-18922\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2026-09-07T15:17:31.157\",\"lastModified\":\"2026-09-08T19:08:15.590\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw was found in 389 Directory Server. 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