# Parse Server: File upload Content-Type override via extension mismatch

Advisory record · `GHSA-vr5f-2r24-w5hc`

- **Identifiers:** `GHSA-vr5f-2r24-w5hc` · `BIT-parse-2026-35200` · `CVE-2026-35200`
- **State:** Confirmed
- **Severity:** CVSS 2.1 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-436](https://cwe.mitre.org/data/definitions/436.html)
- **Tags:** [CWE-436](https://agentprime.io/advisories/tag/cwe-436.md)
- **Published:** 4 Apr 2026
- **Updated:** 8 Apr 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 4 Apr 2026, 04:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `parse-server` (npm): affected `>=9.0.0, <9.7.1-alpha.4 || <8.6.73`; fixed in `9.7.1-alpha.4`, `8.6.73`

## 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

- 2.1 Low, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 4 Apr 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-vr5f-2r24-w5hc](https://github.com/advisories/GHSA-vr5f-2r24-w5hc)
- [OSV: GHSA-vr5f-2r24-w5hc](https://osv.dev/vulnerability/GHSA-vr5f-2r24-w5hc)
- <https://github.com/parse-community/parse-server/security/advisories/GHSA-vr5f-2r24-w5hc>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-35200>
- <https://github.com/parse-community/parse-server/pull/10383>
- <https://github.com/parse-community/parse-server/pull/10384>
- <https://github.com/parse-community/parse-server>

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-vr5f-2r24-w5hc>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-vr5f-2r24-w5hc/>. Everything for agents: <https://agentprime.io/llms.txt>.