Cloudanix VulnDB

CVE-2026-33246

Medium · 6.4

CVSS

6.4

EPSS

0.2%

Published

Mar 25, 2026

CISA due date

—

The record

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The nats-server offers a `Nats-Request-Info:` message header, providing information about a request. This is supposed to provide enough information to allow for account/user identification, such that NATS clients could make their own decisions on how to trust a message, provided that they trust the nats-server as a broker. A leafnode connecting to a nats-server is not fully trusted unless the system account is bridged too. Thus identity claims should not have propagated unchecked. Prior to versions 2.11.15 and 2.12.6, NATS clients relying upon the Nats-Request-Info: header could be spoofed. This does not directly affect the nats-server itself, but the CVSS Confidentiality and Integrity scores are based upon what a hypothetical client might choose to do with this NATS header. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

Affected packages

Ecosystem Package Introduced Fixed
Chainguard k3s 0 1.35.2.1-r4
Chainguard k3s-1.32 0 1.32.13.1-r7
Chainguard k3s-1.33 0 1.33.9.1-r6
Chainguard k3s-static 0 1.35.2.1-r4
Chainguard k3s-static-1.32 0 1.32.13.1-r7
Chainguard k3s-static-1.33 0 1.33.9.1-r6
Chainguard kine 0 0.14.15-r1
Chainguard milvus-2.5 0 2.5.27-r4
Chainguard nats 0 0.3.2-r0
Chainguard nats-fips 0 0.3.2-r0
Chainguard nats-top 0 0.6.3-r18
Chainguard nats-top-fips 0 0.6.3-r16
Chainguard prometheus-nats-exporter 0 0.19.1-r4
Chainguard prometheus-nats-exporter-fips 0 0.19.1-r4
Chainguard rke2-runtime-1.33 0 1.33.9.2.1-r3
Chainguard rke2-runtime-1.34 0 1.34.5.2.1-r3
Chainguard rke2-runtime-1.35 0 1.35.2.2.1-r3
Chainguard rke2-runtime-fips-1.34 0 1.34.6.2.1-r2
Chainguard rke2-runtime-fips-1.35 0 1.35.2.2.1-r2
Chainguard telegraf-1.37 0 1.37.3-r6
Chainguard telegraf-1.38 0 1.38.1-r1
Wolfi k3s 0 1.35.2.1-r4
Wolfi k3s-1.32 0 1.32.13.1-r7
Wolfi k3s-1.33 0 1.33.9.1-r6
Wolfi k3s-static 0 1.35.2.1-r4
Wolfi k3s-static-1.32 0 1.32.13.1-r7
Wolfi k3s-static-1.33 0 1.33.9.1-r6
Wolfi kine 0 0.14.15-r1
Wolfi nats 0 0.3.2-r0
Wolfi nats-top 0 0.6.3-r18
Wolfi prometheus-nats-exporter 0 0.19.1-r4
Wolfi telegraf-1.37 0 1.37.3-r6
Wolfi telegraf-1.38 0 1.38.1-r1
openSUSE:Leap 15.6 govulncheck-vulndb 0 0.0.20260326T203309-150000.1.155.2

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