Uncontrolled resource consumption in the Consul Connect CA roots endpoint (CVE-2026-19015)
Consul Community Edition and Consul Enterprise versions 1.2.0 through 2.0.2 contain an uncontrolled resource consumption vulnerability in the Connect CA roots endpoint. This flaw allows a remote caller to cause the agent's Connect CA roots cache to grow without limit, bypassing the operator's cache-disable configuration. The issue is resolved in Consul 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
AI Analysis
Technical Summary
CVE-2026-19015 is a vulnerability affecting Consul Community Edition and Consul Enterprise from version 1.2.0 up to but not including 2.0.3. The vulnerability exists in the Connect CA roots endpoint, where a remote attacker can cause uncontrolled resource consumption by forcing the Connect CA roots cache to grow indefinitely. This behavior defeats the cache-disable configuration set by the operator. The vulnerability has been fixed in Consul 2.0.3 and in Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An attacker can remotely cause the Connect CA roots cache to grow without bound, leading to uncontrolled resource consumption on the affected Consul agent. This may degrade system performance or availability by exhausting memory or other resources. The vulnerability bypasses the operator's cache-disable configuration, making mitigation via configuration ineffective without applying the fix.
Mitigation Recommendations
A patch is available and should be applied. Upgrade to Consul version 2.0.3 or later, or Consul Enterprise versions 1.21.17, 1.22.11, or 2.0.3 or later to remediate this vulnerability. No other mitigations are indicated or effective since the vulnerability bypasses cache-disable settings.
Uncontrolled resource consumption in the Consul Connect CA roots endpoint (CVE-2026-19015)
Description
Consul Community Edition and Consul Enterprise versions 1.2.0 through 2.0.2 contain an uncontrolled resource consumption vulnerability in the Connect CA roots endpoint. This flaw allows a remote caller to cause the agent's Connect CA roots cache to grow without limit, bypassing the operator's cache-disable configuration. The issue is resolved in Consul 2.0.3 and Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19015 is a vulnerability affecting Consul Community Edition and Consul Enterprise from version 1.2.0 up to but not including 2.0.3. The vulnerability exists in the Connect CA roots endpoint, where a remote attacker can cause uncontrolled resource consumption by forcing the Connect CA roots cache to grow indefinitely. This behavior defeats the cache-disable configuration set by the operator. The vulnerability has been fixed in Consul 2.0.3 and in Consul Enterprise versions 1.21.17, 1.22.11, and 2.0.3.
Potential Impact
An attacker can remotely cause the Connect CA roots cache to grow without bound, leading to uncontrolled resource consumption on the affected Consul agent. This may degrade system performance or availability by exhausting memory or other resources. The vulnerability bypasses the operator's cache-disable configuration, making mitigation via configuration ineffective without applying the fix.
Mitigation Recommendations
A patch is available and should be applied. Upgrade to Consul version 2.0.3 or later, or Consul Enterprise versions 1.21.17, 1.22.11, or 2.0.3 or later to remediate this vulnerability. No other mitigations are indicated or effective since the vulnerability bypasses cache-disable settings.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-consul-2026-19015
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-19015"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a8c4c6dacd9273b499c0a38
Added to database: 08/24/2026, 13:51:41 UTC
Last enriched: 08/24/2026, 14:25:00 UTC
Last updated: 08/24/2026, 22:52:09 UTC
Views: 2
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