CVE-2026-91149: Allocation of Resources Without Limits or Throttling in Red Hat Red Hat Enterprise Linux 10
CVE-2026-91149 is a denial-of-service vulnerability in Cockpit that allows unauthenticated remote attackers to exhaust system resources by creating an unbounded number of threads via numerous simultaneous connections to the cockpit-tls service. This results in degradation or complete unavailability of the Cockpit service for legitimate users. The vulnerability affects availability only and does not impact confidentiality or integrity.
AI Analysis
Technical Summary
A flaw in Cockpit's cockpit-tls service allows an unauthenticated remote attacker with network access to TCP port 9090 to initiate and sustain numerous simultaneous connections. This causes the service to spawn an unbounded number of detached threads, consuming system resources such as memory and file descriptors. The primary impact is a denial of service (DoS) condition, leading to service degradation or unavailability. The vulnerability is tracked as CWE-770 (Allocation of Resources Without Limits or Throttling) and has a CVSS v3.1 base score of 7.5 (High) with no confidentiality or integrity impact, only availability impact.
Potential Impact
Exploitation results in denial of service by exhausting system resources through unbounded thread creation, causing degradation or complete unavailability of the Cockpit service. There is no impact on confidentiality or integrity.
Mitigation Recommendations
No official fix or patch is currently confirmed. Patch status is not yet confirmed — check the Red Hat advisory for current remediation guidance. Exploitation requires network access to TCP port 9090; restricting access to this port may reduce exposure. Monitor vendor updates for patches or mitigations.
CVE-2026-91149: Allocation of Resources Without Limits or Throttling in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-91149 is a denial-of-service vulnerability in Cockpit that allows unauthenticated remote attackers to exhaust system resources by creating an unbounded number of threads via numerous simultaneous connections to the cockpit-tls service. This results in degradation or complete unavailability of the Cockpit service for legitimate users. The vulnerability affects availability only and does not impact confidentiality or integrity.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A flaw in Cockpit's cockpit-tls service allows an unauthenticated remote attacker with network access to TCP port 9090 to initiate and sustain numerous simultaneous connections. This causes the service to spawn an unbounded number of detached threads, consuming system resources such as memory and file descriptors. The primary impact is a denial of service (DoS) condition, leading to service degradation or unavailability. The vulnerability is tracked as CWE-770 (Allocation of Resources Without Limits or Throttling) and has a CVSS v3.1 base score of 7.5 (High) with no confidentiality or integrity impact, only availability impact.
Potential Impact
Exploitation results in denial of service by exhausting system resources through unbounded thread creation, causing degradation or complete unavailability of the Cockpit service. There is no impact on confidentiality or integrity.
Mitigation Recommendations
No official fix or patch is currently confirmed. Patch status is not yet confirmed — check the Red Hat advisory for current remediation guidance. Exploitation requires network access to TCP port 9090; restricting access to this port may reduce exposure. Monitor vendor updates for patches or mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3m8q-36jp-wgm3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-91149"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aade50b55bf5e2cf5edaca9
Added to database: 09/19/2026, 01:27:39 UTC
Last enriched: 09/19/2026, 01:39:05 UTC
Last updated: 09/19/2026, 03:01:24 UTC
Views: 2
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