CVE-2026-7776
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.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-26)
- CWE
- CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7x9r-wcgg-w86f | 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 |
| GO-2026-5237 | 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 |