CVE-2026-19113Network attack vector

Unauthenticated service interruption via unbounded request bodies

Published Aug 7, 2026 · Updated Aug 7, 2026

Denial of service in HashiCorp Consul and Consul Enterprise 1.3.0 through 2.0.2 allows remote attackers to exhaust agent memory. Several agent HTTP API endpoints read request bodies without a size limit before performing ACL authorization, consuming memory even when the request is rejected. Network access to the agent HTTP API is sufficient; trusted-client restrictions or mutual TLS reduce exposure to service interruption.

CVSS severity5.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in HashiCorp Consul and Consul Enterprise 1.3.0 through 2.0.2 allows remote attackers to exhaust agent memory. Several agent HTTP API endpoints read request bodies without a size limit before performing ACL authorization, consuming memory even when the request is rejected. Network access to the agent HTTP API is sufficient; trusted-client restrictions or mutual TLS reduce exposure to service interruption.

The record

CVE
CVE-2026-19113
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
HashiCorp
Product
Consul Enterprise
Classifications
CWE-400, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.3.0 <2.0.3 changes=[{"at":"1.21.17","status":"unaffected"},{"at":"1.22.11","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HashiCorp · Consul Enterpriseversion=1.3.0 <2.0.3 changes=[{"at":"1.21.17","status":"unaffected"},{"at":"1.22.11","status":"unaffected"}]
HashiCorp · Consulversion=1.3.0 <2.0.3

Published CVSS scores

5.3HashiCorp Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo