# Apache Commons FileUpload, Apache Commons FileUpload: FileUpload DoS via part headers

Advisory record · `GHSA-vv7r-c36w-3prj`

- **Identifiers:** `GHSA-vv7r-c36w-3prj` · `CVE-2025-48976`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** Yes: CVSS 7+ and EPSS
- **Weakness (CWE):** [CWE-770](https://cwe.mitre.org/data/definitions/770.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 16 Jun 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 16 Jun 2025, 15:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 7.5 (7.0 or more) and EPSS 0.34 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `commons-fileupload:commons-fileupload` (Maven): affected `>=1.0, <1.6.0`; fixed in `1.6.0`
- `org.apache.commons:commons-fileupload2-core` (Maven): affected `>=2.0.0-M1, <2.0.0-M4`; fixed in `2.0.0-M4`

## Machine-written summary

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

> Apache Commons FileUpload versions 1.0 through before 1.6, and commons-fileupload2-core versions 2.0.0-M1 through before 2.0.0-M4, are vulnerable. The source gives few details, but the flaw involves resource allocation for multipart part headers when limits are insufficient, which allows a denial of service. Users should upgrade to commons-fileupload 1.6 or commons-fileupload2-core 2.0.0-M4.

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

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from ADP (CISA-ADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.34, the 98th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## 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-vv7r-c36w-3prj)

## Sources

- [GitHub Advisory Database: GHSA-vv7r-c36w-3prj](https://github.com/advisories/GHSA-vv7r-c36w-3prj)
- [OSV: GHSA-vv7r-c36w-3prj](https://osv.dev/vulnerability/GHSA-vv7r-c36w-3prj)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-48976>
- <https://github.com/apache/commons-fileupload/commit/b247774a72a044f5d5380ae947140ee80af4e78b>
- <https://github.com/apache/commons-fileupload/commit/bf68f63cfb312ef4710fb3dfb4d8e4e1665f4497>
- <https://github.com/apache/tomcat/commit/97790a35a27d236fa053e660676c3f8196284d93>
- <https://github.com/apache/commons-fileupload>
- <https://lists.apache.org/thread/fbs3wrr3p67vkjcxogqqqqz45pqtso12>
- <https://lists.debian.org/debian-lts-announce/2025/07/msg00008.html>
- <https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html>
- <http://www.openwall.com/lists/oss-security/2025/06/16/4>

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-vv7r-c36w-3prj>, 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-vv7r-c36w-3prj/>. Everything for agents: <https://agentprime.io/llms.txt>.