CVE-2026-58250NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system.
Updated under an hour ago ()
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It affects linuxfoundation nats-server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by sending repeated leafnode INFO protocol messages before authentication and account setup completed. This issue is fixed in versions 2.12.8 and 2.11.17.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linuxfoundation nats-server linuxfoundation:nats-server | before 2.11.17; from 2.12.0 before 2.12.8 | NVD |
References
- https://github.com/nats-io/nats-server/commit/8dcb26eaea78fdcbe96dbee5986d6019fd5cb94apatch
- https://github.com/nats-io/nats-server/commit/fc5fe39177533e9dbdd651d2458285bfae1dde27patch
- https://github.com/nats-io/nats-server/releases/tag/v2.11.17release-notes
- https://github.com/nats-io/nats-server/releases/tag/v2.12.8release-notes
- https://github.com/nats-io/nats-server/security/advisories/GHSA-3g5q-cfh2-cq67vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.