# Unhandled exception when decoding form response JSON

Advisory record · `GHSA-wjfq-88q2-r34j`

- **Identifiers:** `GHSA-wjfq-88q2-r34j` · `CVE-2022-51014` · `PKSA-rk71-pq1c-y6tt`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-248](https://cwe.mitre.org/data/definitions/248.html)
- **Tags:** [CWE-248](https://agentprime.io/advisories/tag/cwe-248.md)
- **Published:** 21 Jan 2022
- **Updated:** 8 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 21 Jan 2022, 23:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `pocketmine/pocketmine-mp` (Packagist): affected `>=4.0.0, <4.0.7`; fixed in `4.0.7`

## Machine-written summary

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

> Versions 4.0.0 up to but not including 4.0.7 of the PocketMine-MP server package (pocketmine/pocketmine-mp) are affected. When a Minecraft Windows client sends malformed form response JSON, an InvalidArgumentException thrown by the JSON workaround function is not caught, which crashes the server; the source does not state whether any special access is needed to trigger it. Upgrade to version 4.0.7, which is listed as the fixed version.

Written 31 Oct 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

- 7.1 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`, from CNA (VulnCheck)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0053, the 45th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:06 UTC: First seen by agentprime
- 31 Oct 2026, 14:06 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-wjfq-88q2-r34j)

## Sources

- [GitHub Advisory Database: GHSA-wjfq-88q2-r34j](https://github.com/advisories/GHSA-wjfq-88q2-r34j)
- [OSV: GHSA-wjfq-88q2-r34j](https://osv.dev/vulnerability/GHSA-wjfq-88q2-r34j)
- <https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wjfq-88q2-r34j>
- <https://github.com/pmmp/PocketMine-MP/commit/56fe71d939c38fe14e18a31a673a9331bcc0e4ca>
- <https://github.com/pmmp/PocketMine-MP>
- <https://github.com/pmmp/PocketMine-MP/blob/4.0.7/changelogs/4.0.md#407>

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-wjfq-88q2-r34j>, 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-wjfq-88q2-r34j/>. Everything for agents: <https://agentprime.io/llms.txt>.