Improper Encoding or Escaping of Output Affecting mariadb package, versions <3.5.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-MARIADB-19432139
- published30 Aug 2026
- disclosed28 Aug 2026
- creditfg0x0
Introduced: 28 Aug 2026
NewCVE-2026-55855 (opens in a new tab)How to fix?
Upgrade mariadb to version 3.5.3 or higher.
Overview
Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the client-side escaping of Buffer parameters under certain multi-byte client character sets, specifically big5, gbk, sjis, cp932, or gb18030. An attacker can gain unauthorized access to or modify data by supplying crafted input that manipulates the escaping process, causing the intended string literal to be terminated and arbitrary SQL to be executed.
Note: This is only exploitable if the connection's client character set is set to one of the affected multi-byte charsets and untrusted data is bound as a Buffer parameter.
Workaround
This vulnerability can be mitigated by using server-side prepared statements (execute) so parameters are bound via the binary protocol, or by avoiding passing untrusted data as Buffer parameters under the affected charsets.