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THREAT OPS › Threat News › [NVD] CVE-2026-27889 (HIGH 7.5) — NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before a

[NVD] CVE-2026-27889 (HIGH 7.5) — NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before a

lownvdPublished 2026-03-25

CVE-2026-27889 CVSS: 7.5 HIGH Published: 2026-03-25T20:16:27.210

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can con

Indicators of compromise

CVE-2026-27889cve
nats.iodomain

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-27889