# MariaDB has possible SQL injection in Buffer parameter escaping under big5/gbk/sjis/cp932/gb18030 client charsets

Advisory record · `GHSA-g5xc-5w98-jfvm`

- **Identifiers:** `GHSA-g5xc-5w98-jfvm` · `BIT-mariadb-2026-55855` · `BIT-mariadb-min-2026-55855` · `BIT-mysql-client-2026-55855` · `CVE-2026-55855`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-89](https://cwe.mitre.org/data/definitions/89.html) · [CWE-116](https://cwe.mitre.org/data/definitions/116.html)
- **Tags:** [SQL injection](https://agentprime.io/advisories/tag/sql-injection.md) · [CWE-116](https://agentprime.io/advisories/tag/cwe-116.md)
- **Published:** 28 Aug 2026
- **Updated:** 2 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 28 Aug 2026, 22:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `mariadb` (npm): affected `<3.2.4 || >=3.3.0, <3.3.4 || >=3.4.0, <3.4.6 || >=3.5.0, <3.5.3`; fixed in `3.2.4`, `3.3.4`, `3.4.6`, `3.5.3`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0069, the 53rd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 28 Aug 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-g5xc-5w98-jfvm](https://github.com/advisories/GHSA-g5xc-5w98-jfvm)
- [OSV: GHSA-g5xc-5w98-jfvm](https://osv.dev/vulnerability/GHSA-g5xc-5w98-jfvm)
- <https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-g5xc-5w98-jfvm>
- <https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/0148cadba48064d430902678bbc5b4b62dc1c04f>
- <https://github.com/mariadb-corporation/mariadb-connector-nodejs>
- <https://jira.mariadb.org/browse/CONJS-350>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-g5xc-5w98-jfvm>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-g5xc-5w98-jfvm/>. Everything for agents: <https://agentprime.io/llms.txt>.