Integer Overflow or Wraparound Affecting k3s-1.32 package, versions <1.32.13.1-r5


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.58% (44th percentile)

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  • Snyk IDSNYK-WOLFILATEST-K3S132-15855121
  • published31 Mar 2026
  • disclosed25 Mar 2026

Introduced: 25 Mar 2026

CVE-2026-27889  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Wolfi k3s-1.32 to version 1.32.13.1-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream k3s-1.32 package and not the k3s-1.32 package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

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 connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

CVSS Base Scores

version 3.1