CVE-2026-7776: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Boundary
CVE-2026-7776 affects HashiCorp Boundary Community and Enterprise editions prior to versions 0. 21. 3, 0. 20. 3, and 0. 19. 5. The vulnerability allows an attacker with network access to the worker authentication listener to cause a denial-of-service by opening a TLS connection and delaying or withholding the client certificate during the handshake. This blocks worker connection handling and can prevent legitimate worker connections from being accepted or routed. The issue is due to allocation of resources without limits or throttling during node enrollment TLS handshakes.
AI Analysis
Technical Summary
HashiCorp Boundary versions before 0.21.3, 0.20.3, and 0.19.5 are vulnerable to a denial-of-service condition (CWE-770) during node enrollment TLS handshakes. An attacker with network access to the worker authentication listener can open a connection and delay or withhold the client certificate, causing the worker connection handling to block. This resource exhaustion prevents legitimate worker connections from being processed. The vulnerability is addressed in the fixed versions mentioned.
Potential Impact
The vulnerability results in a denial-of-service (DoS) condition impacting availability by blocking legitimate worker connections to Boundary. There is no impact on confidentiality or integrity. The CVSS score is 7.5 (high severity), reflecting network attack vector, no privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix is available in HashiCorp Boundary versions 0.21.3, 0.20.3, and 0.19.5. Users should upgrade to one of these versions to remediate the vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
CVE-2026-7776: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Boundary
Description
CVE-2026-7776 affects HashiCorp Boundary Community and Enterprise editions prior to versions 0. 21. 3, 0. 20. 3, and 0. 19. 5. The vulnerability allows an attacker with network access to the worker authentication listener to cause a denial-of-service by opening a TLS connection and delaying or withholding the client certificate during the handshake. This blocks worker connection handling and can prevent legitimate worker connections from being accepted or routed. The issue is due to allocation of resources without limits or throttling during node enrollment TLS handshakes.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
HashiCorp Boundary versions before 0.21.3, 0.20.3, and 0.19.5 are vulnerable to a denial-of-service condition (CWE-770) during node enrollment TLS handshakes. An attacker with network access to the worker authentication listener can open a connection and delay or withhold the client certificate, causing the worker connection handling to block. This resource exhaustion prevents legitimate worker connections from being processed. The vulnerability is addressed in the fixed versions mentioned.
Potential Impact
The vulnerability results in a denial-of-service (DoS) condition impacting availability by blocking legitimate worker connections to Boundary. There is no impact on confidentiality or integrity. The CVSS score is 7.5 (high severity), reflecting network attack vector, no privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix is available in HashiCorp Boundary versions 0.21.3, 0.20.3, and 0.19.5. Users should upgrade to one of these versions to remediate the vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-05-04T15:10:16.232Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f914f1cbff5d86104e7376
Added to database: 5/4/2026, 9:51:45 PM
Last enriched: 5/4/2026, 10:06:18 PM
Last updated: 5/4/2026, 11:06:30 PM
Views: 3
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