CVE-2026-92262mariadb Vulnerability
Numerous issues caused by historical #mysql50# tablename encoding bypass
Published Sep 7, 2026 · Updated Oct 16, 2026 · Also known as EUVD-2026-102939, GHSA-65jj-h265-3m7h
Key Facts
Patch in the next maintenance window- CVE-2026-92262 is a critical-severity vulnerability (CVSS 9.9 v3.1) affecting mariadb (debian), MariaDB/server (github-repo), Server.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 0.7% probability of exploitation in the next 30 days.
- Fixed versions are available, including mariadb 1:11.8.9+ds-1, Server 10.11.19, Server 10.6.28.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
Scores
CVSS v3.1
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.7%
Higher than 51.3% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
34/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
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, 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.
Affected Products
7 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| mariadbdebian | See advisory | 1:11.8.9+ds-1 |
| MariaDB/servergithub-repo | See advisory | n/a |
| Server | >= 12.3.1,, >= >= 10.6.1, < 10.6.28 | 12.3.3 |
Patched Releases
mariadb
1:11.8.9+ds-1
Server
10.11.19, 10.6.28, 11.4.13, 11.8.9, 12.3.3, 13.0.2
Timeline
Publicly disclosed
Sep 7, 2026
Last updated
Oct 16, 2026
Weakness Type
- CWE-706 Use of Incorrectly-Resolved Name or Reference
References
- advisoryhttps://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h
- otherhttps://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e
- otherhttps://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb
- otherhttps://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
- otherhttps://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
FAQ
Common Questions.
MariaDB server is a community developed fork of MySQL server.
Affected: mariadb (debian); MariaDB/server (github-repo); Server versions >= 12.3.1,, >= >= 10.6.1, < 10.6.28. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including mariadb 1:11.8.9+ds-1, Server 10.11.19, Server 10.6.28.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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