CVE-2026-7776
Boundary Workers Vulnerable to Denial of Service During TLS Handshake
- State
- Published
- Severity
- 7.5 High
- Published
- May 4, 2026
- Updated
- May 5, 2026
- Reserved
- May 4, 2026
Description
Boundary Community Edition and Boundary Enterprise (“Boundary”) workers are vulnerable to a denial-of-service condition during node enrollment TLS handshakes. An attacker with network access to the worker authentication listener may open a connection and delay or withhold the client certificate during the TLS handshake, causing worker connection handling to block. This may prevent legitimate worker connections from being accepted or routed. This vulnerability, CVE-2026-7776, is fixed in Boundary 0.21.3, 0.20.3, 0.19.5.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | HashiCorp |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
BoundaryHashiCorp |
|
Boundary EnterpriseHashiCorp |
|
References
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