CVE-2025-11374: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Consul
Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, 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.
AI Analysis
Technical Summary
HashiCorp Consul versions prior to Community Edition 1.22.0 and Enterprise 1.22.0, 1.21.6, 1.20.8, and 1.18.12 contain a vulnerability (CVE-2025-11374) in the key/value endpoint where the Content Length header is not properly validated. This leads to allocation of resources without limits or throttling (CWE-770), enabling denial of service conditions. The vulnerability has a CVSS 3.1 base score of 6.5 with network attack vector, low attack complexity, requiring low privileges and no user interaction, impacting availability only. The vendor has released official fixes in the specified versions.
Potential Impact
Successful exploitation of this vulnerability can cause denial of service by exhausting resources due to improper Content Length header validation in the key/value endpoint of Consul. Confidentiality and integrity are not impacted. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to Consul Community Edition 1.22.0 or Consul Enterprise 1.22.0, 1.21.6, 1.20.8, or 1.18.12 where this vulnerability is fixed. No other mitigations are specified or required once patched.
CVE-2025-11374: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Consul
Description
Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
HashiCorp Consul versions prior to Community Edition 1.22.0 and Enterprise 1.22.0, 1.21.6, 1.20.8, and 1.18.12 contain a vulnerability (CVE-2025-11374) in the key/value endpoint where the Content Length header is not properly validated. This leads to allocation of resources without limits or throttling (CWE-770), enabling denial of service conditions. The vulnerability has a CVSS 3.1 base score of 6.5 with network attack vector, low attack complexity, requiring low privileges and no user interaction, impacting availability only. The vendor has released official fixes in the specified versions.
Potential Impact
Successful exploitation of this vulnerability can cause denial of service by exhausting resources due to improper Content Length header validation in the key/value endpoint of Consul. Confidentiality and integrity are not impacted. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to Consul Community Edition 1.22.0 or Consul Enterprise 1.22.0, 1.21.6, 1.20.8, or 1.18.12 where this vulnerability is fixed. No other mitigations are specified or required once patched.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2025-10-06T15:34:09.965Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6901290f69001fc67a5e1760
Added to database: 10/28/2025, 8:35:27 PM
Last enriched: 4/18/2026, 1:45:29 PM
Last updated: 5/9/2026, 9:50:50 AM
Views: 230
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.