CVE-2026-39830

CRITICAL EPSS 31.0%
Published May 22, 20261mo ago · Modified Jun 17, 20261w ago
9.1 CVSS 3.1
Critical
Find Similar
Published May 22, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
31.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety

Affected Products 1

VendorProductVersionRange
golangcrypto* <0.52.0

References 5

  • go.dev https://go.dev/cl/781640
    Issue Tracking
  • go.dev https://go.dev/cl/781664
    Issue Tracking
  • go.dev https://go.dev/issue/79564
    Issue Tracking
  • groups.google.com https://groups.google.com/g/golang-announce/c/a082jnz-LvI
    Mailing List
  • pkg.go.dev https://pkg.go.dev/vuln/GO-2026-5017
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.