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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HashiCorp | Boundary | 0.9.0 – < 0.21.3 | 0.21.3 |
| HashiCorp | Boundary Enterprise | 0.9.0 – < 0.21.3 | 0.21.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/hashicorp/boundary | < 0.19.5 | 0.19.5 | GHSA-7x9r-wcgg-w86f |
| Go | github.com/hashicorp/boundary | >= 0.20.0, < 0.20.3 | 0.20.3 | GHSA-7x9r-wcgg-w86f |
| Go | github.com/hashicorp/boundary | >= 0.21.0, < 0.21.3 | 0.21.3 | GHSA-7x9r-wcgg-w86f |
| Go | github.com/hashicorp/boundary | < 0.19.5 · >= 0.20.0, < 0.20.3 · >= 0.21.0, < 0.21.3 | 0.19.5, 0.20.3, 0.21.3 | GO-2026-5237 |
Advisories 1
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026