CVE-2026-19015
Uncontrolled resource consumption in the Consul Connect CA roots endpoint
Description
Consul Community Edition and Consul Enterprise 1.2.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect CA roots endpoint that may allow a remote caller to grow the agent's Connect CA roots cache without bound, defeating the operator's cache-disable configuration. This vulnerability, CVE-2026-19015, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
INFO
Published Date :
Aug. 7, 2026, 8:16 p.m.
Last Modified :
Aug. 7, 2026, 8:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 67fedba0-ff2e-4543-ba5b-aa93e87718cc | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Consul to version 2.0.3 or later.
- Update Consul Enterprise to 1.21.17, 1.22.11, or 2.0.3.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19015.
| URL | Resource |
|---|---|
| https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19015 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19015
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19015 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19015 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 07, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/hashicorp/consul', 'vendor': 'HashiCorp', 'product': 'Consul', 'versions': [{'status': 'affected', 'version': '1.2.0', 'lessThan': '2.0.3', 'versionType': 'semver'}], 'platforms': ['64 bit', '32 bit', 'x86', 'ARM', 'MacOS', 'Windows', 'Linux'], 'defaultStatus': 'unaffected'}, {'repo': 'https://github.com/hashicorp/consul', 'vendor': 'HashiCorp', 'product': 'Consul Enterprise', 'versions': [{'status': 'affected', 'changes': [{'at': '1.21.17', 'status': 'unaffected'}, {'at': '1.22.11', 'status': 'unaffected'}], 'version': '1.2.0', 'lessThan': '2.0.3', 'versionType': 'semver'}], 'platforms': ['64 bit', '32 bit', 'x86', 'ARM', 'MacOS', 'Windows', 'Linux'], 'defaultStatus': 'unaffected'}] Added Description Consul Community Edition and Consul Enterprise 1.2.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect CA roots endpoint that may allow a remote caller to grow the agent's Connect CA roots cache without bound, defeating the operator's cache-disable configuration. This vulnerability, CVE-2026-19015, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-770 Added Reference https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629