Medium 6.5Published Oct 28, 2025

CVE-2025-11375Consul's event endpoint is vulnerable to denial of service

Updated under an hour ago (Oct 27, 2026, 2:50 AM ET)

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It affects HashiCorp Consul and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for HashiCorp Consul

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: HashiCorp
NVD analysis: Analyzed
Record last updated: Dec 8, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

HashiCorp Consul hashicorp:consul (from the name)	before 1.22.0	CNA record
HashiCorp Consul Enterprise hashicorp:consul_enterprise (from the name)	before 1.22.0; fixed at 1.21.6, fixed at 1.20.8, fixed at 1.18.12	CNA record
hashicorp consul hashicorp:consul	before 1.18.12; before 1.22.0; from 1.19.0 before 1.20.8; from 1.21.0 before 1.21.6	NVD

References

References

https://discuss.hashicorp.com/t/hcsec-2025-28-consuls-event-endpoint-is-vulnerable-to-denial-of-service/76723	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.