# Apache Tomcat - Security constraints not correctly applied

Advisory record · `GHSA-5m62-pw8w-7w9f`

- **Identifiers:** `GHSA-5m62-pw8w-7w9f` · `BIT-tomcat-2026-43515` · `CVE-2026-43515`
- **State:** Confirmed
- **Severity:** CVSS 9.1 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-285](https://cwe.mitre.org/data/definitions/285.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 12 May 2026
- **Updated:** 11 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 12 May 2026, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.1: 9.0 or more.

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

## Affected packages

- `org.apache.tomcat.embed:tomcat-embed-core` (Maven): affected `<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.22`; fixed in `9.0.118`, `10.1.55`, `11.0.22`
- `org.apache.tomcat:tomcat` (Maven): affected `<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.22`; fixed in `9.0.118`, `10.1.55`, `11.0.22`
- `org.apache.tomcat:tomcat-catalina` (Maven): affected `<9.0.118 || >=10.1.0-M1, <10.1.55 || >=11.0.0-M1, <11.0.22`; fixed in `9.0.118`, `10.1.55`, `11.0.22`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.012, the 68th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:16 UTC: First seen by agentprime
- 31 Oct 2026, 14:16 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-5m62-pw8w-7w9f)

## Sources

- [GitHub Advisory Database: GHSA-5m62-pw8w-7w9f](https://github.com/advisories/GHSA-5m62-pw8w-7w9f)
- [OSV: GHSA-5m62-pw8w-7w9f](https://osv.dev/vulnerability/GHSA-5m62-pw8w-7w9f)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-43515>
- <https://github.com/apache/tomcat/commit/276087d9c7abbcecc6c4fb4e4b08cf64780c6e36>
- <https://github.com/apache/tomcat/commit/c621317382682206fb58ab92ebd3e1b6fdd10ce9>
- <https://github.com/apache/tomcat/commit/db919ff9912b4d61d1b702a1342b8bde39270031>
- <https://github.com/apache/tomcat>
- <https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb>
- <https://tomcat.apache.org/security-10.html>
- <https://tomcat.apache.org/security-11.html>
- <https://tomcat.apache.org/security-9.html>
- <http://www.openwall.com/lists/oss-security/2026/05/12/11>

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-5m62-pw8w-7w9f>, 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-5m62-pw8w-7w9f/>. Everything for agents: <https://agentprime.io/llms.txt>.