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Details of issue NIXPKGS-2026-0762

NIXPKGS-2026-0762
published on
Permalink CVE-2026-33249
4.3 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): LOW
  • Availability impact (A): NONE
updated 1 month, 1 week ago by @LeSuisse Activity log
  • Created suggestion 1 month, 1 week ago
  • @LeSuisse accepted 1 month, 1 week ago
  • @LeSuisse published on GitHub 1 month, 1 week ago
NATS: Message tracing can be redirected to arbitrary subject

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to which the client does not have publish permission. The payload is a valid trace message and not chosen by the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

Affected products

nats-server
  • ==>= 2.11.0, < 2.11.15
  • ==>= 2.12.0-preview.1, < 2.12.6

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/nats-io/nats-server/security/advisories/GHSA-8m2x-3m6q-6w8j