# LangChain4j: SQL injection via metadata filters in langchain4j-mariadb and langchain4j-pgvector

Advisory record · `GHSA-2mfg-cc43-9pcj`

- **Identifiers:** `GHSA-2mfg-cc43-9pcj` · `CVE-2026-55405`
- **State:** Confirmed
- **Severity:** CVSS 7.6 High
- **Critical:** No
- **Weakness (CWE):** [CWE-89](https://cwe.mitre.org/data/definitions/89.html)
- **Tags:** [SQL injection](https://agentprime.io/advisories/tag/sql-injection.md)
- **Published:** 17 Jun 2026
- **Updated:** 17 Jun 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 17 Jun 2026, 18:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `dev.langchain4j:langchain4j-mariadb` (Maven): affected `<1.2.1-beta8 || >=1.3.0-beta9, <1.5.1-beta11 || >=1.6.0-beta12, <1.11.8-beta19 || >=1.12.1-beta21, <1.16.3-beta26`; fixed in `1.2.1-beta8`, `1.5.1-beta11`, `1.11.8-beta19`, `1.16.3-beta26`
- `dev.langchain4j:langchain4j-pgvector` (Maven): affected `<1.2.1-beta8 || >=1.3.0-beta9, <1.5.1-beta11 || >=1.6.0-beta12, <1.11.8-beta19 || >=1.12.1-beta21, <1.16.3-beta26`; fixed in `1.2.1-beta8`, `1.5.1-beta11`, `1.11.8-beta19`, `1.16.3-beta26`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0047, the 41st percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-2mfg-cc43-9pcj)

## Sources

- [GitHub Advisory Database: GHSA-2mfg-cc43-9pcj](https://github.com/advisories/GHSA-2mfg-cc43-9pcj)
- [OSV: GHSA-2mfg-cc43-9pcj](https://osv.dev/vulnerability/GHSA-2mfg-cc43-9pcj)
- <https://github.com/langchain4j/langchain4j/security/advisories/GHSA-2mfg-cc43-9pcj>
- <https://github.com/langchain4j/langchain4j>

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-2mfg-cc43-9pcj>, 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-2mfg-cc43-9pcj/>. Everything for agents: <https://agentprime.io/llms.txt>.