# Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT

Advisory record · `GHSA-83qj-6fr2-vhqg`

- **Identifiers:** `GHSA-83qj-6fr2-vhqg` · `BIT-tomcat-2025-24813` · `CVE-2025-24813`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: KEV, CVSS 9+, CVSS 7+ and EPSS
- **Weakness (CWE):** [CWE-44](https://cwe.mitre.org/data/definitions/44.html) · [CWE-502](https://cwe.mitre.org/data/definitions/502.html)
- **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md) · [CWE-44](https://agentprime.io/advisories/tag/cwe-44.md)
- **Published:** 10 Mar 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 10 Mar 2025, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- In CISA’s KEV catalogue since 1 Apr 2025: it is known to be exploited.
- CVSS score 9.8: 9.0 or more.
- CVSS score 9.8 (7.0 or more) and EPSS 1.00 (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

- `org.apache.tomcat:tomcat-catalina` (Maven): affected `>=11.0.0-M1, <11.0.3 || >=10.1.0-M1, <10.1.35 || >=9.0.0.M1, <9.0.99 || >=8.5.0, <=8.5.100`; fixed in `11.0.3`, `10.1.35`, `9.0.99`
- `org.apache.tomcat.embed:tomcat-embed-core` (Maven): affected `>=11.0.0-M1, <11.0.3 || >=10.1.0-M1, <10.1.35 || >=9.0.0.M1, <9.0.99 || >=8.5.0, <=8.5.100`; fixed in `11.0.3`, `10.1.35`, `9.0.99`

## Machine-written summary

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

> Apache Tomcat versions 11.0.0-M1 through 11.0.2, 10.1.0-M1 through 10.1.34, and 9.0.0.M1 through 9.0.98 are affected, as are 8.5.0 through 8.5.100 (EOL). An attacker who can reach a Tomcat instance with write enabled on the default servlet (disabled by default) and partial PUT support (enabled by default) can exploit a path equivalence flaw involving file names with internal dots. Depending on the setup, this may allow viewing or altering security-sensitive files, or remote code execution through file-based session persistence. Upgrade to 11.0.3, 10.1.35, or 9.0.99.

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

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

- **CISA KEV:** Listed since 1 Apr 2025: known to be exploited.
- **EPSS:** 1.00, the 99th percentile, on 14 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-83qj-6fr2-vhqg)

## Sources

- [GitHub Advisory Database: GHSA-83qj-6fr2-vhqg](https://github.com/advisories/GHSA-83qj-6fr2-vhqg)
- [OSV: GHSA-83qj-6fr2-vhqg](https://osv.dev/vulnerability/GHSA-83qj-6fr2-vhqg)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-24813>
- <https://github.com/apache/tomcat/commit/0a668e0c27f2b7ca0cc7c6eea32253b9b5ecb29c>
- <https://github.com/apache/tomcat/commit/eb61aade8f8daccaecabf07d428b877975622f72>
- <https://github.com/apache/tomcat/commit/f6c01d6577cf9a1e06792be47e623d36acc3b5dc>
- <https://github.com/absholi7ly/POC-CVE-2025-24813/blob/main/README.md>
- <https://github.com/apache/tomcat>
- <https://lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq>
- <https://lists.debian.org/debian-lts-announce/2025/04/msg00003.html>
- <https://security.netapp.com/advisory/ntap-20250321-0001>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24813>
- <https://www.vicarius.io/vsociety/posts/cve-2025-24813-detect-apache-tomcat-rce>
- <https://www.vicarius.io/vsociety/posts/cve-2025-24813-mitigate-apache-tomcat-rce>

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-83qj-6fr2-vhqg>, 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-83qj-6fr2-vhqg/>. Everything for agents: <https://agentprime.io/llms.txt>.