{"cve":"CVE-2026-7776","nvd":{"published":"2026-05-04T22:16:20.330","modified":"2026-10-26T19:10:00.163","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://discuss.hashicorp.com/t/hcsec-2026-11-boundary-workers-vulnerable-to-denial-of-service-during-tls-handshake"],"products":[],"source":"nvd","synced_at":"2026-10-26T19:31:02.781428341+00:00"},"epss":{"cve":"CVE-2026-7776","score":0.002,"percentile":0.09797,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-7x9r-wcgg-w86f","url":"https://osv.dev/vulnerability/GHSA-7x9r-wcgg-w86f","summary":"Hashicorp Boundary workers are vulnerable to a denial-of-service condition during node enrollment TLS handshakes","modified":"2026-07-21T14:00:35.523620905Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/boundary","purl":"pkg:golang/github.com/hashicorp/boundary","ranges":["<0.19.5"],"fixed":["0.19.5"]},{"ecosystem":"Go","name":"github.com/hashicorp/boundary","purl":"pkg:golang/github.com/hashicorp/boundary","ranges":[">=0.20.0 <0.20.3"],"fixed":["0.20.3"]},{"ecosystem":"Go","name":"github.com/hashicorp/boundary","purl":"pkg:golang/github.com/hashicorp/boundary","ranges":[">=0.21.0 <0.21.3"],"fixed":["0.21.3"]}]},{"id":"GO-2026-5237","url":"https://osv.dev/vulnerability/GO-2026-5237","summary":"Hashicorp Boundary workers are vulnerable to a denial-of-service condition during node enrollment TLS handshakes in github.com/hashicorp/boundary","modified":"2026-06-25T19:45:19.158777685Z","packages":[{"ecosystem":"Go","name":"github.com/hashicorp/boundary","purl":"pkg:golang/github.com/hashicorp/boundary","ranges":["<0.19.5",">=0.20.0 <0.20.3",">=0.21.0 <0.21.3"],"fixed":["0.19.5","0.20.3","0.21.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}