CVE-2026-97031 Affecting neuvector package, versions <5.6.2-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-NEUVECTOR-20775101
  • published10 Oct 2026
  • disclosed8 Oct 2026

Introduced: 8 Oct 2026

NewCVE-2026-97031  (opens in a new tab)

How to fix?

Upgrade Chainguard neuvector to version 5.6.2-r3 or higher.

NVD Description

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

Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and curb the memory amplification vector as a result.

CVSS Base Scores

version 3.1