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Advisory severityHigh7.5Red Hat Linux

High [CVE-2026-19015] Uncontrolled resource consumption leading to denial of service

This high-severity Red Hat Linux advisory covers CVE-2026-19015.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-19015 Source published Source updated

VulniPulse record published Record updated

CVE-2026-19015
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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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. A flaw was found in Consul.

This allows the attacker to continuously grow the agent's Connect CA roots cache, bypassing configured cache limits. The consequence is a denial of service (DoS) due to excessive memory usage, impacting the availability of the service.

Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.

Affected versions
  • 1.2.0
  • 2.0.2

Official advisory · high-confidence parse· fetched 28 days ago·verify at source

Fixed versions
  • 2.0.3
  • 1.21.17
  • 1.22.11

Official advisory · high-confidence parse· fetched 28 days ago·verify at source

Mitigation

Upgrade to a fixed release: 2.0.3, 1.21.17, 1.22.11. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 28 days ago·verify at source

Discussion(0)

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