{"schemaVersion":3,"id":"CVE-2026-107822","aliases":["DEBIAN-CVE-2026-107822","UBUNTU-CVE-2026-107822"],"status":"published","duplicateOf":null,"title":null,"description":"MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB's ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal's database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.","dates":{"published":"2026-10-09T17:28:47.578Z","modified":"2026-10-13T20:27:06.868Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","exploitability":1.3,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","exploitability":1.3,"impact":9.8,"computed":true}]},"epss":{"probability":0.00478,"percentile":0.40003,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-10T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00478,"percentile":0.40003}],"last30":[{"date":"2026-10-10T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00478,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00478,"percentile":0.40003}]},"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-706","name":"Use of Incorrectly-Resolved Name or Reference","description":"The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/706.html"},{"id":"CWE-863","name":"Incorrect Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"}],"affected":[{"vendor":"debian","product":"mariadb","name":"mariadb","label":"mariadb","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/mariadb","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1:11.8.9+ds-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1:11.8.9+ds-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mariadb","name":"mariadb","label":"mariadb","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mariadb","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mariadb-10.0","name":"mariadb-10.0","label":"mariadb-10.0","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mariadb-10.0","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mariadb-10.1","name":"mariadb-10.1","label":"mariadb-10.1","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mariadb-10.1","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mariadb-10.3","name":"mariadb-10.3","label":"mariadb-10.3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mariadb-10.3","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mariadb-10.6","name":"mariadb-10.6","label":"mariadb-10.6","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mariadb-10.6","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mysql-5.5","name":"mysql-5.5","label":"mysql-5.5","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mysql-5.5","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mysql-5.7","name":"mysql-5.7","label":"mysql-5.7","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mysql-5.7","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mysql-8.0","name":"mysql-8.0","label":"mysql-8.0","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mysql-8.0","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mysql-8.4","name":"mysql-8.4","label":"mysql-8.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mysql-8.4","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"percona-server-5.6","name":"percona-server-5.6","label":"percona-server-5.6","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/percona-server-5.6","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"percona-xtradb-cluster-5.6","name":"percona-xtradb-cluster-5.6","label":"percona-xtradb-cluster-5.6","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/percona-xtradb-cluster-5.6","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"mariadb","product":"mariadb","name":"mariadb","label":"mariadb","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.6.1, < 10.6.28","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.11.1, < 10.11.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.4.1, < 11.4.13","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.8.1, < 11.8.9","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.3.1, < 12.3.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 13.0.1, < 13.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.6.1, < 10.6.28 | ≥ 10.11.1, < 10.11.19 | ≥ 11.4.1, < 11.4.13 | ≥ 11.8.1, < 11.8.9 | ≥ 12.3.1, < 12.3.3 | ≥ 13.0.1, < 13.0.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"mariadb","label":"MariaDB","category":"database"}},"hubHref":"/vendor/mariadb/mariadb"},{"vendor":"mariadb","product":"server","name":"server","label":"server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.6.1, < 10.6.28","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.11.1, < 10.11.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.4.1, < 11.4.13","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.8.1, < 11.8.9","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.3.1, < 12.3.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 13.0.1, < 13.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.6.1, < 10.6.28 | ≥ 10.11.1, < 10.11.19 | ≥ 11.4.1, < 11.4.13 | ≥ 11.8.1, < 11.8.9 | ≥ 12.3.1, < 12.3.3 | ≥ 13.0.1, < 13.0.2","eol":null,"hubHref":"/vendor/mariadb/server"}],"affectedCount":14,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf","label":"github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Vendor Advisory"]},{"url":"https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b","label":"github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b","hostname":"github.com","tags":["X Refsource MISC","REPORT","Patch"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19","label":"github.com/MariaDB/server/releases/tag/mariadb-10.11.19","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28","label":"github.com/MariaDB/server/releases/tag/mariadb-10.6.28","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13","label":"github.com/MariaDB/server/releases/tag/mariadb-11.4.13","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9","label":"github.com/MariaDB/server/releases/tag/mariadb-11.8.9","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3","label":"github.com/MariaDB/server/releases/tag/mariadb-12.3.3","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2","label":"github.com/MariaDB/server/releases/tag/mariadb-13.0.2","hostname":"github.com","tags":["X Refsource MISC","REPORT","Release Notes"]},{"url":"https://jira.mariadb.org/browse/MDEV-40541","label":"jira.mariadb.org/browse/MDEV-40541","hostname":"jira.mariadb.org","tags":["X Refsource MISC","REPORT","Issue Tracking"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-107822","label":"security-tracker.debian.org/tracker/CVE-2026-107822","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-107822","label":"ubuntu.com/security/CVE-2026-107822","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-107822","label":"www.cve.org/CVERecord?id=CVE-2026-107822","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["RHSA-2026:83108","RHSA-2026:84689"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-09T17:28:47.578Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-13T20:27:06.868Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T15:35:28.726Z","stale":false,"partial":false}}