CVE-2026-29785 (GCVE-0-2026-29785)
Vulnerability from cvelistv5
Published
2026-03-25 19:38
Modified
2026-08-24 12:07
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.
References
Impacted products
Vendor Product Version
nats-io nats-server Version: < 2.11.14
Version: >= 2.12.0-RC.1, < 2.12.5
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