# Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability Advisory record · `GHSA-5j33-cvvr-w245` - **Identifiers:** `GHSA-5j33-cvvr-w245` · `BIT-tomcat-2024-50379` · `CVE-2024-50379` - **State:** Confirmed - **Severity:** CVSS 9.8 Critical - **Critical:** Yes: CVSS 9+, CVSS 7+ and EPSS - **Weakness (CWE):** [CWE-367](https://cwe.mitre.org/data/definitions/367.html) - **Tags:** [Race condition](https://agentprime.io/advisories/tag/race-condition.md) - **Published:** 17 Dec 2024 - **Updated:** 10 Sept 2026 - **Reviewed by a person:** No Published by the GitHub Advisory Database at 17 Dec 2024, 15:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. ## Critical Critical, because: - CVSS score 9.8: 9.0 or more. - CVSS score 9.8 (7.0 or more) and EPSS 0.32 (0.1 or more): a high score and a real chance of exploitation in the next 30 days. How we decide what’s critical: ## Affected packages - `org.apache.tomcat:tomcat-catalina` (Maven): affected `>=11.0.0-M1, <11.0.2 || >=10.1.0-M1, <10.1.34 || >=9.0.0.M1, <9.0.98 || >=8.5.0, <=8.5.100`; fixed in `11.0.2`, `10.1.34`, `9.0.98` - `org.apache.tomcat.embed:tomcat-embed-core` (Maven): affected `>=11.0.0-M1, <11.0.2 || >=10.1.0-M1, <10.1.34 || >=9.0.0.M1, <9.0.98 || >=8.5.0, <=8.5.100`; fixed in `11.0.2`, `10.1.34`, `9.0.98` ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > Apache Tomcat (tomcat-catalina and tomcat-embed-core) versions 11.0.0-M1 through 11.0.1, 10.1.0-M1 through 10.1.33, 9.0.0.M1 through 9.0.97, and 8.5.0 through 8.5.100 are affected. The flaw is a race condition during JSP compilation on case-insensitive file systems, and it can lead to remote code execution when the default servlet is enabled for write, a non-default configuration. Upgrade to 11.0.2, 10.1.34, or 9.0.98, which fix the issue. 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`, from GitHub Advisory Database - **CISA KEV:** Not listed. - **EPSS:** 0.32, the 98th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 17 Dec 2024, 12:34 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2024-50379) - 17 Dec 2024, 13:15 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-50379) - 31 Oct 2026, 14:17 UTC: First seen by agentprime - 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-5j33-cvvr-w245) ## Sources - [GitHub Advisory Database: GHSA-5j33-cvvr-w245](https://github.com/advisories/GHSA-5j33-cvvr-w245) - [OSV: GHSA-5j33-cvvr-w245](https://osv.dev/vulnerability/GHSA-5j33-cvvr-w245) - - - - - - - - - - - - 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 (), 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: - In a browser: reads your lockfile in the browser, never uploading it. - Whether it touches your code, with file and line: the Claude Code plugin, - As JSON: , or `POST https://api.agentprime.io/v1/match` with your packages () --- The web page: . Everything for agents: .