{"schemaVersion":3,"id":"CVE-2026-18922","aliases":["RHSA-2026:64811","UBUNTU-CVE-2026-18922","DEBIAN-CVE-2026-18922"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-09-07T14:14:53.799Z","modified":"2026-10-08T14:14:57.932Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Red hat","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0056,"percentile":0.45806,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.0056},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0056,"percentile":0.45806}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0056,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0056,"percentile":0.45806}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-287","name":"Improper Authentication","description":"When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/287.html"}],"affected":[{"vendor":"debian","product":"389-ds-base","name":"389-ds-base","label":"389-ds-base","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/389-ds-base","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"389-ds-base","name":"389-ds-base","label":"389-ds-base","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/389-ds-base","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"redhat","product":"389-ds-base","name":"389-ds-base","label":"389-ds-base","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/389-ds-base","purlType":"rpm","versions":[{"text":"< 0:1.2.11.15-97.el6_10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.2.11.15-97.el6_10.1","eol":null,"hubHref":null},{"vendor":"redhat","product":"389-ds-base-debuginfo","name":"389-ds-base-debuginfo","label":"389-ds-base-debuginfo","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/389-ds-base-debuginfo","purlType":"rpm","versions":[{"text":"< 0:1.2.11.15-97.el6_10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.2.11.15-97.el6_10.1","eol":null,"hubHref":null},{"vendor":"redhat","product":"389-ds-base-devel","name":"389-ds-base-devel","label":"389-ds-base-devel","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/389-ds-base-devel","purlType":"rpm","versions":[{"text":"< 0:1.2.11.15-97.el6_10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.2.11.15-97.el6_10.1","eol":null,"hubHref":null},{"vendor":"redhat","product":"389-ds-base-libs","name":"389-ds-base-libs","label":"389-ds-base-libs","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/389-ds-base-libs","purlType":"rpm","versions":[{"text":"< 0:1.2.11.15-97.el6_10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.2.11.15-97.el6_10.1","eol":null,"hubHref":null}],"affectedCount":6,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:64771","label":"access.redhat.com/errata/RHSA-2026:64771","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64776","label":"access.redhat.com/errata/RHSA-2026:64776","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64778","label":"access.redhat.com/errata/RHSA-2026:64778","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64779","label":"access.redhat.com/errata/RHSA-2026:64779","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64780","label":"access.redhat.com/errata/RHSA-2026:64780","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64781","label":"access.redhat.com/errata/RHSA-2026:64781","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64783","label":"access.redhat.com/errata/RHSA-2026:64783","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64784","label":"access.redhat.com/errata/RHSA-2026:64784","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64785","label":"access.redhat.com/errata/RHSA-2026:64785","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64789","label":"access.redhat.com/errata/RHSA-2026:64789","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64790","label":"access.redhat.com/errata/RHSA-2026:64790","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64791","label":"access.redhat.com/errata/RHSA-2026:64791","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64792","label":"access.redhat.com/errata/RHSA-2026:64792","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64793","label":"access.redhat.com/errata/RHSA-2026:64793","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64804","label":"access.redhat.com/errata/RHSA-2026:64804","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:64811","label":"access.redhat.com/errata/RHSA-2026:64811","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:79217","label":"access.redhat.com/errata/RHSA-2026:79217","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-18922","label":"access.redhat.com/security/cve/CVE-2026-18922","hostname":"access.redhat.com","tags":["VDB Entry","X Refsource REDHAT","REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511388","label":"bugzilla.redhat.com/show_bug.cgi?id=2511388","hostname":"bugzilla.redhat.com","tags":["Issue Tracking","X Refsource REDHAT","REPORT"]},{"url":"https://access.redhat.com/security/updates/classification/#critical","label":"access.redhat.com/security/updates/classification/","hostname":"access.redhat.com","tags":["ARTICLE"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_64811.json","label":"security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_64811.json","hostname":"security.access.redhat.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18922","label":"www.cve.org/CVERecord?id=CVE-2026-18922","hostname":"www.cve.org","tags":["Advisory","REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18922","label":"nvd.nist.gov/vuln/detail/CVE-2026-18922","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-18922","label":"ubuntu.com/security/CVE-2026-18922","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-18922","label":"security-tracker.debian.org/tracker/CVE-2026-18922","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11739-1","OPENSUSE-SU-2026:21950-1","RHSA-2026:64771","RHSA-2026:64776","RHSA-2026:64778","RHSA-2026:64779","RHSA-2026:64780","RHSA-2026:64781","RHSA-2026:64783","RHSA-2026:64784","RHSA-2026:64785","RHSA-2026:64789","RHSA-2026:64790","RHSA-2026:64791","RHSA-2026:64792","RHSA-2026:64793","RHSA-2026:64804","RHSA-2026:79217","SUSE-SU-2026:23916-1","SUSE-SU-2026:4380-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11739-1","OPENSUSE-SU-2026:21950-1","SUSE-SU-2026:23916-1","SUSE-SU-2026:4380-1"]},"timeline":[{"kind":"published","date":"2026-09-07T14:14:53.799Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-08T14:14:57.932Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T22:52:08.696Z","stale":false,"partial":false}}