# Apache Tomcat Incomplete Cleanup vulnerability

Advisory record · `GHSA-jm7m-8jh6-29hp`

- **Identifiers:** `GHSA-jm7m-8jh6-29hp` · `BIT-tomcat-2023-42794` · `CVE-2023-42794`
- **State:** Confirmed
- **Severity:** CVSS 5.9 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-459](https://cwe.mitre.org/data/definitions/459.html)
- **Tags:** [CWE-459](https://agentprime.io/advisories/tag/cwe-459.md)
- **Published:** 10 Oct 2023
- **Updated:** 13 Feb 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 10 Oct 2023, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.apache.tomcat:tomcat-coyote` (Maven): affected `>=9.0.70, <9.0.81 || >=8.5.85, <8.5.94`; fixed in `9.0.81`, `8.5.94`

## Machine-written summary

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

> Apache Tomcat (tomcat-coyote) versions 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 are affected. On Windows, if a web application opened an uploaded file's stream and did not close it, the file could remain on disk, which could eventually fill the disk and cause a denial of service. Upgrade to Tomcat 9.0.81 or 8.5.94 or later, which fixes the issue.

Written 7 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

- 5.9 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.023, the 83rd percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:11 UTC: First seen by agentprime
- 31 Oct 2026, 15:11 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-jm7m-8jh6-29hp)

## Sources

- [GitHub Advisory Database: GHSA-jm7m-8jh6-29hp](https://github.com/advisories/GHSA-jm7m-8jh6-29hp)
- [OSV: GHSA-jm7m-8jh6-29hp](https://osv.dev/vulnerability/GHSA-jm7m-8jh6-29hp)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-42794>
- <https://github.com/apache/tomcat>
- <https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82>
- <http://www.openwall.com/lists/oss-security/2023/10/10/8>

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-jm7m-8jh6-29hp>, 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-jm7m-8jh6-29hp/>. Everything for agents: <https://agentprime.io/llms.txt>.