# DNSJava affected by KeyTrap - NSEC3 closest encloser proof can exhaust CPU resources

Advisory record · `GHSA-mmwx-rj87-vfgr`

- **Identifiers:** `GHSA-mmwx-rj87-vfgr`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.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, 14:46 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

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Two Maven packages are affected. dnsjava:dnsjava versions 3.5.0 up to but not including 3.6.0 can suffer CPU exhaustion when its ValidatingResolver performs DNSSEC validation on specially crafted DNSSEC-signed zones. Users should upgrade to dnsjava 3.6.0. The org.jitsi:dnssecjava package, versions 2.0.0 and earlier, is also listed as affected, but no fixed version is listed for it.

Written 2 Nov 2026.

## 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-mmwx-rj87-vfgr)

## Sources

- [GitHub Advisory Database: GHSA-mmwx-rj87-vfgr](https://github.com/advisories/GHSA-mmwx-rj87-vfgr)
- [OSV: GHSA-mmwx-rj87-vfgr](https://osv.dev/vulnerability/GHSA-mmwx-rj87-vfgr)
- <https://github.com/dnsjava/dnsjava/security/advisories/GHSA-mmwx-rj87-vfgr>
- <https://nvd.nist.gov/vuln/detail/CVE-2023-50868>
- <https://github.com/dnsjava/dnsjava/commit/711af79be3214f52daa5c846b95766dc0a075116>
- <https://github.com/advisories/GHSA-pv4h-p8jr-6cv2>
- <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-mmwx-rj87-vfgr>, 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-mmwx-rj87-vfgr/>. Everything for agents: <https://agentprime.io/llms.txt>.