# Incorrect version tags linked to external repository

Advisory record · `GHSA-593v-wcqx-hq2w`

- **Identifiers:** `GHSA-593v-wcqx-hq2w` · `BIT-parse-2021-47986` · `BIT-parse-2021-47987` · `CVE-2021-47986` · `CVE-2021-47987`
- **State:** Confirmed
- **Severity:** CVSS 7.7 High
- **Critical:** No
- **Weakness (CWE):** [CWE-484](https://cwe.mitre.org/data/definitions/484.html) · [CWE-494](https://cwe.mitre.org/data/definitions/494.html)
- **Tags:** [CWE-484](https://agentprime.io/advisories/tag/cwe-484.md) · [CWE-494](https://agentprime.io/advisories/tag/cwe-494.md)
- **Published:** 7 Sept 2021
- **Updated:** 2 Nov 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 7 Sept 2021, 22:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `parse-server` (npm): affected `>=4.0.0, <4.5.2 || >=4.6.0, <4.10.0`; fixed in `4.5.2`, `4.10.0`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 7 Sept 2021, 22:57 UTC: [Confirmed by GitHub Advisory Database](https://github.com/advisories/GHSA-593v-wcqx-hq2w)
- 2 Nov 2026, 18:45 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-593v-wcqx-hq2w)

## Sources

- [GitHub Advisory Database: GHSA-593v-wcqx-hq2w](https://github.com/advisories/GHSA-593v-wcqx-hq2w)
- [OSV: GHSA-593v-wcqx-hq2w](https://osv.dev/vulnerability/GHSA-593v-wcqx-hq2w)
- <https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w>
- <https://nvd.nist.gov/vuln/detail/CVE-2021-47986>
- <https://nvd.nist.gov/vuln/detail/CVE-2021-47987>
- <https://github.com/parse-community/parse-server>
- <https://www.vulncheck.com/advisories/parse-server-arbitrary-code-execution-via-malicious-version-tags>
- <https://www.vulncheck.com/advisories/parse-server-unreviewed-code-execution-via-malicious-version-tags>

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-593v-wcqx-hq2w>, 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-593v-wcqx-hq2w/>. Everything for agents: <https://agentprime.io/llms.txt>.