Vulnerability · Published Oct 28, 2025 · Assigned by HashiCorp
CVE-2025-11375Consul's event endpoint is vulnerable to denial of service
Medium 6.5
In plain English
A medium-severity resource allocation without limits in Consul from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/hashicorp/consul | 1.22.0 | GHSA-qh7p-pfq3-677h |
| Go | github.com/hashicorp/consul | 1.22.0 | GO-2025-4082 |
| Ubuntu:22.04:LTS | consul | no fix listed | UBUNTU-CVE-2025-11375 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HashiCorp | Consul | 0 – before 1.22.0 |
| HashiCorp | Consul Enterprise | 0 – before 1.22.0 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H