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CVE-2026-58250 NATS Server: Pre-auth server crash via double INFO in leafnode handshake

🗓️ 08 Jul 2026 19:48:55Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Unauthenticated leafnode with compression can crash the server during handshake by repeated information messages; fixed in 2.12.8 and 2.11.17.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-58250
8 Jul 202619:48
attackerkb
CVE
CVE-2026-58250
8 Jul 202619:48
cve
Debian CVE
CVE-2026-58250
1 Jan 197600:00
debiancve
EUVD
EUVD-2026-42380
8 Jul 202619:48
euvd
NVD
CVE-2026-58250
8 Jul 202620:16
nvd
OSV
DEBIAN-CVE-2026-58250
4 Jul 202606:48
osv
OSV
UBUNTU-CVE-2026-58250
6 Jul 202600:00
osv
Positive Technologies
PT-2026-56563
8 Jul 202600:00
ptsecurity
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-58250
4 Jul 202600:00
nessus
[
  {
    "vendor": "nats-io",
    "product": "nats-server",
    "versions": [
      {
        "version": "< 2.11.17",
        "status": "affected"
      },
      {
        "version": ">= 2.12.0-preview.1, < 2.12.8",
        "status": "affected"
      }
    ]
  }
]

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