CVE-2026-39830

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Source
https://cve.org/CVERecord?id=CVE-2026-39830
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-39830.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-39830
Aliases
Downstream
Related
Published
2026-05-22T02:31:27.208Z
Modified
2026-06-06T18:29:31.988900333Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh
Details

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39830.json",
    "cna_assigner": "Go",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "0.52.0"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/golang/crypto

Affected ranges

Type
GIT
Repo
https://github.com/golang/crypto
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a1c0d9929856c8aba2b31f079340f00578eda803
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.52.0"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.19.0
v0.2.0
v0.20.0
v0.21.0
v0.22.0
v0.23.0
v0.24.0
v0.25.0
v0.26.0
v0.27.0
v0.28.0
v0.29.0
v0.3.0
v0.30.0
v0.31.0
v0.32.0
v0.33.0
v0.34.0
v0.35.0
v0.36.0
v0.37.0
v0.38.0
v0.39.0
v0.4.0
v0.40.0
v0.41.0
v0.42.0
v0.43.0
v0.44.0
v0.45.0
v0.46.0
v0.47.0
v0.48.0
v0.49.0
v0.5.0
v0.50.0
v0.51.0
v0.6.0
v0.7.0
v0.8.0
v0.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-39830.json"