# CVE-2024-50379: Apache Tomcat: RCE due to TOCTOU issue in JSP compilation

> Attackers can achieve remote code execution via a race condition in JSP compilation on case-insensitive file systems when the default servlet write is enabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Dec 2024
- **Updated:** 3 Nov 2025
- **Also known as:** BIT-tomcat-2024-50379, CLSA-2025-1745585424, DEBIAN-CVE-2024-50379, GHSA-5j33-cvvr-w245, RHSA-2025:0342, RHSA-2025:0361, RHSA-2025:1920, ROOT-APP-MAVEN-CVE-2024-50379, UBUNTU-CVE-2024-50379

## What is CVE-2024-50379?

CVE-2024-50379 is a critical vulnerability in Apache Tomcat, published on 17 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration).

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.0.97.

The following versions were EOL at the time the CVE was created but are 
known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

Weakness: CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition)

## Which versions are affected by CVE-2024-50379?

17 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat:tomcat-catalina. It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 10.1.0-M1 | 10.1.34 |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 10.1.0-M1 | 10.1.34 |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 11.0.0-M1 | 11.0.2 |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 11.0.0-M1 | 11.0.2 |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 8.5.0 to 8.5.100 | None |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 8.5.0 to 8.5.100 | None |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 9.0.0.M1 | 9.0.98 |
| `org.apache.tomcat.embed:tomcat-embed-core` | Maven | From 9.0.0.M1 | 9.0.98 |
| `tomcat` | Bitnami | From 9.0.0 | 9.0.98, 10.1.34, 11.0.2 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 10.1.0-M1 | 10.1.34 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 10.1.0-M1 | 10.1.34 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 11.0.0-M1 | 11.0.2 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 11.0.0-M1 | 11.0.2 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 8.5.0 to 8.5.100 | None |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 8.5.0 to 8.5.100 | None |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 9.0.0.M1 | 9.0.98 |
| `org.apache.tomcat:tomcat-catalina` | Maven | From 9.0.0.M1 | 9.0.98 |
| `jws5-tomcat` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-admin-webapps` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-docs-webapp` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-el-3.0-api` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-java-jdk11` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-java-jdk8` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-javadoc` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-jsp-2.3-api` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-lib` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-selinux` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-servlet-4.0-api` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat-webapps` | Red Hat:jboss_enterprise_web_server:5.8::el7 | All versions | 0:9.0.87-6.redhat_00006.1.el7jws |
| `jws5-tomcat` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-admin-webapps` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-docs-webapp` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-el-3.0-api` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-javadoc` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-jsp-2.3-api` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-lib` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-selinux` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-servlet-4.0-api` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat-webapps` | Red Hat:jboss_enterprise_web_server:5.8::el8 | All versions | 0:9.0.87-6.redhat_00006.1.el8jws |
| `jws5-tomcat` | Red Hat:jboss_enterprise_web_server:5.8::el9 | All versions | 0:9.0.87-6.redhat_00006.1.el9jws |

Products: Apache Tomcat, Netapp Bootstrap Os.

## How do I fix CVE-2024-50379?

Upgrade org.apache.tomcat.embed:tomcat-embed-core to a fixed version for your release line: 10.1.34, 11.0.2 or 9.0.98.

## Is CVE-2024-50379 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-50379 exists.

Public exploit code:

- tomcat CVE-2024-50379/CVE-2024-56337 条件竞争文件上传exp (github_poc): https://github.com/SleepingBag945/CVE-2024-50379
- RCE through a race condition in Apache Tomcat (github_poc): https://github.com/ph0ebus/Tomcat-CVE-2024-50379-Poc
- Apache Tomcat（CVE-2024-50379）条件竞争致远程代码执行漏洞批量检测脚本 (github_poc): https://github.com/iSee857/CVE-2024-50379-PoC
- https://github.com/v3153/CVE-2024-50379-POC (github_poc): https://github.com/v3153/CVE-2024-50379-POC
- This repository contains a Python script designed to exploit CVE-2024-50379, a vulnerability that allows attackers to upload a JSP shell to a vulnerable server and execute arbitrary commands remotely. This exploit is particularly useful when the /uploads directory is either unprotected or not present on the target server. (github_poc): https://github.com/dragonked2/CVE-2024-50379-POC
- Repositorio para alojar un template de Nuclei para probar el CVE-2024-50379 (en fase de prueba) (github_poc): https://github.com/JFOZ1010/Nuclei-Template-CVE-2024-50379

## Other vulnerabilities in Apache Tomcat

- [CVE-2025-24813](https://insights.sbomify.com/CVE-2025-24813/): Apache Tomcat Path Equivalence (critical 10.0, exploited in the wild)
- [CVE-2016-8735](https://insights.sbomify.com/CVE-2016-8735/): Apache Tomcat Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-12617](https://insights.sbomify.com/CVE-2017-12617/): Apache Tomcat Remote Code Execution (high 8.1, exploited in the wild)
- [CVE-2017-12615](https://insights.sbomify.com/CVE-2017-12615/): Apache Tomcat on Windows Remote Code Execution (high 8.1, exploited in the wild)
- [CVE-2026-34486](https://insights.sbomify.com/CVE-2026-34486/): Apache Tomcat Missing Encryption of Sensitive Data (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-50379 and fix it if it is affected.

What it is: CVE-2024-50379 is a critical vulnerability in Apache Tomcat, published on 17 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-50379 exists.

Affected packages and fixed versions:
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.34
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.34
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.2
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.2
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.5.0 up to 8.5.100; no fix listed
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.5.0 up to 8.5.100; no fix listed
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.98
- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0.M1; fixed in 9.0.98
- tomcat (Bitnami): affected from 9.0.0; fixed in 9.0.98, 10.1.34, 11.0.2
- org.apache.tomcat:tomcat-catalina (Maven): affected from 10.1.0-M1; fixed in 10.1.34
- org.apache.tomcat:tomcat-catalina (Maven): affected from 10.1.0-M1; fixed in 10.1.34
- org.apache.tomcat:tomcat-catalina (Maven): affected from 11.0.0-M1; fixed in 11.0.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-50379/ (Markdown: https://insights.sbomify.com/CVE-2024-50379/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-50379
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-50379
- OSV: https://osv.dev/vulnerability/CVE-2024-50379

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-50379/
Summaries are generated and may contain mistakes; the official description above is the record.