PT-2026-58919 · Bitnami · Nats

Published 2026-07-14 · Updated 2026-07-14

OSV

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.

Related Identifiers

BIT-NATS-2026-58250

Affected Products

Nats

References · 7

• https://osv.dev/vulnerability/BIT-nats-2026-58250 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-58250 · Security Note
• https://github.com/nats-io/nats-server/releases/tag/v2.11.17 · Note
• https://github.com/nats-io/nats-server/commit/fc5fe39177533e9dbdd651d2458285bfae1dde27 · Note
• https://github.com/nats-io/nats-server/commit/8dcb26eaea78fdcbe96dbee5986d6019fd5cb94a · Note
• https://github.com/nats-io/nats-server/security/advisories/GHSA-3g5q-cfh2-cq67 · Note
• https://github.com/nats-io/nats-server/releases/tag/v2.12.8 · Note