CVE-2026-92262

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From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. 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."}], "id": "CVE-2026-92262", "lastModified": "2026-10-21T03:17:20.003", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-92262", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-21T02:27:59.402947Z", "version": "2.0.3"}}]}, "published": "2026-10-16T17:17:52.710", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://jira.mariadb.org/browse/MDEV-40362"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-706"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "mariadb: MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.", "id": "2554205", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554205"}, "csaw": false, "cwe": "CWE-73", "details": ["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, the #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. 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.", "A flaw was found in MariaDB. An authenticated remote attacker can supply a crafted table name with the #mysql50# prefix, which bypasses normal filesystem encoding for table names. By accessing files under unencoded legacy names, the attacker can achieve arbitrary code execution, exfiltrate sensitive information, corrupt data, or trigger a denial of service (DoS) by crashing the database server."], "mitigation": {"lang": "en:us", "value": "Upgrade to the fixed version of MariaDB Server"}, "name": "CVE-2026-92262", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "mariadb10.11", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "mariadb11.8", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "mariadb", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mariadb:10.11/mariadb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "mariadb:10.3/mariadb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mariadb:10.11/mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mariadb:11.8/mariadb", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "hi/mariadb", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "mariadb10.11", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "mariadb11.8", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "mariadb", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}], "public_date": "2026-10-16T16:25:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-92262\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-92262\nhttps://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e\nhttps://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb\nhttps://github.com/MariaDB/server/releases/tag/mariadb-10.11.19\nhttps://github.com/MariaDB/server/releases/tag/mariadb-10.6.28\nhttps://github.com/MariaDB/server/releases/tag/mariadb-11.4.13\nhttps://github.com/MariaDB/server/releases/tag/mariadb-11.8.9\nhttps://github.com/MariaDB/server/releases/tag/mariadb-12.3.3\nhttps://github.com/MariaDB/server/releases/tag/mariadb-13.0.2\nhttps://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h\nhttps://jira.mariadb.org/browse/MDEV-40362"], "statement": "Red Hat Product Security rates this vulnerability as having an Important severity because an authenticated database user can achieve arbitrary code execution, exfiltrate data, or crash the database service across a network boundary, resulting in a severe compromise of system confidentiality and availability. While default deployments of MariaDB in Red Hat environments restrict direct network connectivity and require valid authentication credentials to submit queries, any user with table-level interaction capabilities can exploit the flaw without needing administrative privileges. The severity is elevated beyond Moderate because bypassing filesystem name encoding can breach the database sandbox and access underlying host files, though the prerequisite of existing database credentials prevents this from reaching Critical severity.", "threat_severity": "Important"}

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