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CVE-2026-92262

critical

MariaDB server is a community developed fork of MySQL server.

Vendor / product: Mariadb — mariadb

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.

CVSS
9.9
9.9 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-16 17:17
Modified: 2026-10-21 03:17
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

mariadb / mariadb ≥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

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h
Patch / mitigation: https://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e
Patch / mitigation: https://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb

References

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗

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