BaseFortify

Publication date: 2025-10-28

Last updated on: 2025-12-22

Assigner: HashiCorp Inc.

Description

Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-28

Last Modified

2025-12-22

Generated

2026-07-06

AI Q&A

2025-10-28

EPSS Evaluated

2026-07-05

NVD

CVE-2025-11375

Affected Vendors & Products

Vendor	Product	Version / Range
hashicorp	consul	to 1.18.12 (exc)
hashicorp	consul	to 1.22.0 (exc)
hashicorp	consul	From 1.19.0 (inc) to 1.20.8 (exc)
hashicorp	consul	From 1.21.0 (inc) to 1.21.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability in Consul and Consul Enterprise affects the event endpoint, which does not enforce a maximum limit on the Content Length header. This allows an attacker to send very large requests that can cause a denial of service (DoS) by overwhelming the system.

Impact Analysis

The vulnerability can lead to a denial of service (DoS) condition, making the Consul service unavailable or unresponsive, which can disrupt operations relying on Consul for service discovery or configuration.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Consul Community Edition to version 1.22.0 or later, or Consul Enterprise to versions 1.22.0, 1.21.6, 1.20.8, or 1.18.12 or later.

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