CVE-2026-78660 Affecting argo-events package, versions <1.9.11-r16


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.3% (22nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-ARGOEVENTS-20730315
  • published10 Oct 2026
  • disclosed8 Oct 2026

Introduced: 8 Oct 2026

NewCVE-2026-78660  (opens in a new tab)

How to fix?

Upgrade Chainguard argo-events to version 1.9.11-r16 or higher.

NVD Description

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

Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. However, this makes it possible for our HTTP/2 implementation to forward responses containing such headers to an HTTP/1 client when acting as a reverse proxy. If the HTTP/1 client also does not behave strictly enough, this can result in response smuggling.

CVSS Base Scores

version 3.1