{"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 for RHEL 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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 — 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"}},"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"}}]}}