CVE-2026-2303 Affecting cilium-1.19 package, versions <1.19.5-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-WOLFILATEST-CILIUM119-17385598
  • published19 Jun 2026
  • disclosed10 Feb 2026

Introduced: 10 Feb 2026

CVE-2026-2303  (opens in a new tab)

How to fix?

Upgrade Wolfi cilium-1.19 to version 1.19.5-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cilium-1.19 package and not the cilium-1.19 package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

The mongo-go-driver repository contains CGo bindings for GSSAPI (Kerberos) authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not guaranteed to be null-terminated or have extra padding, this results in reading one byte past the allocated heap buffer.