CVE-2026-19015 (GCVE-0-2026-19015)
Vulnerability from cvelistv5 – Published: 2026-08-07 19:19 – Updated: 2026-08-07 19:19
VLAI
EPSS
VEX
Title
Uncontrolled resource consumption in the Consul Connect CA roots endpoint
Summary
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.
Severity
5.3 (Medium)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Consul |
Affected:
1.2.0 , < 2.0.3
(semver)
|
|
| HashiCorp | Consul Enterprise |
Affected:
1.2.0 , < 2.0.3
(semver)
|
Credits
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}
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"impacts": [
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"capecId": "CAPEC-469",
"descriptions": [
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"metrics": [
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"providerMetadata": {
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"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"shortName": "HashiCorp"
},
"references": [
{
"url": "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
}
],
"source": {
"advisory": "HCSEC-2026-25",
"discovery": "EXTERNAL"
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"title": "Uncontrolled resource consumption in the Consul Connect CA roots endpoint"
}
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"cveMetadata": {
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"cveId": "CVE-2026-19015",
"datePublished": "2026-08-07T19:19:11.407Z",
"dateReserved": "2026-08-05T20:21:29.431Z",
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"state": "PUBLISHED"
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-19015\",\"sourceIdentifier\":\"security@hashicorp.com\",\"published\":\"2026-08-07T20:16:50.403\",\"lastModified\":\"2026-08-07T20:16:50.403\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\u0027s Connect CA roots cache without bound, defeating the operator\u0027s 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.\"}],\"affected\":[{\"source\":\"security@hashicorp.com\",\"affectedData\":[{\"vendor\":\"HashiCorp\",\"product\":\"Consul\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"64 bit\",\"32 bit\",\"x86\",\"ARM\",\"MacOS\",\"Windows\",\"Linux\"],\"repo\":\"https://github.com/hashicorp/consul\",\"versions\":[{\"version\":\"1.2.0\",\"lessThan\":\"2.0.3\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"HashiCorp\",\"product\":\"Consul Enterprise\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"64 bit\",\"32 bit\",\"x86\",\"ARM\",\"MacOS\",\"Windows\",\"Linux\"],\"repo\":\"https://github.com/hashicorp/consul\",\"versions\":[{\"version\":\"1.2.0\",\"lessThan\":\"2.0.3\",\"versionType\":\"semver\",\"status\":\"affected\",\"changes\":[{\"at\":\"1.21.17\",\"status\":\"unaffected\"},{\"at\":\"1.22.11\",\"status\":\"unaffected\"}]}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629\",\"source\":\"security@hashicorp.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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