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Details of issue NIXPKGS-2026-0763

NIXPKGS-2026-0763
published on
Permalink CVE-2026-33223
6.4 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): CHANGED
  • Confidentiality impact (C): LOW
  • 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 Server: Incomplete Stripping of Nats-Request-Info Header Allows Identity Spoofing

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, the NATS message header `Nats-Request-Info:` is supposed to be a guarantee of identity by the NATS server, but the stripping of this header from inbound messages was not fully effective. An attacker with valid credentials for any regular client interface could thus spoof their identity to services which rely upon this header. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

Affected products

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

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/nats-io/nats-server/security/advisories/GHSA-pwx7-fx9r-hr4h