# DNSJava vulnerable to KeyTrap - Denial-of-Service Algorithmic Complexity Attacks

Advisory record · `GHSA-crjg-w57m-rqqf`

- **Identifiers:** `GHSA-crjg-w57m-rqqf`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-770](https://cwe.mitre.org/data/definitions/770.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 22 Jul 2024
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Jul 2024, 17:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `dnsjava:dnsjava` (Maven): affected `>=3.5.0, <3.6.0`; fixed in `3.6.0`
- `org.jitsi:dnssecjava` (Maven): affected `<=2.0.0`; no fixed version yet

## 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:L/PR:N/UI:R/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 14:17 UTC: First seen by agentprime
- 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-crjg-w57m-rqqf)

## Sources

- [GitHub Advisory Database: GHSA-crjg-w57m-rqqf](https://github.com/advisories/GHSA-crjg-w57m-rqqf)
- [OSV: GHSA-crjg-w57m-rqqf](https://osv.dev/vulnerability/GHSA-crjg-w57m-rqqf)
- <https://github.com/dnsjava/dnsjava/security/advisories/GHSA-crjg-w57m-rqqf>
- <https://nvd.nist.gov/vuln/detail/CVE-2023-50387>
- <https://github.com/dnsjava/dnsjava/commit/07ac36a11578cc1bce0cd8ddf2fe568f062aee78>
- <https://github.com/dnsjava/dnsjava/commit/3ddc45ce8cdb5c2274e10b7401416f497694e1cf>
- <https://github.com/advisories/GHSA-8459-gg55-8qjj>
- <https://github.com/dnsjava/dnsjava>

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-crjg-w57m-rqqf>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-crjg-w57m-rqqf/>. Everything for agents: <https://agentprime.io/llms.txt>.