| Name | CVE-2026-58250 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nats-server (PTS) | bookworm | 2.9.10-1 | vulnerable |
| trixie | 2.10.27-1 | vulnerable |
| forky, sid | 2.14.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nats-server | source | (unstable) | 2.14.1-1 | | | |
Notes
https://github.com/nats-io/nats-server/security/advisories/GHSA-3g5q-cfh2-cq67
CVE is for incomplete fixes of CVE-2026-29785 and CVE-2026-33218 in 2.12.7 and
2.11.16, mark the first version following (2.14.1-1) as the fixed one in Debian.