GHSA-7vf8-2cr6-54mf: github.com/argoproj/argo-workflows/v4 (CVE-2026-42295)

Package	Ecosystem	Affected	Fixed in
github.com/argoproj/argo-workflows/v4	Go	>=4.0.0, <4.0.5	4.0.5

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Go module github.com/argoproj/argo-workflows/v4 versions 4.0.0 up to but not including 4.0.5 logs artifact repository credentials, such as S3 access keys, secret keys, GCS service account keys, and Azure account keys, in plaintext during artifact operations. Anyone with Kubernetes permission to read workflow pod logs in the workflow namespace can extract these credentials. Upgrade to version 4.0.5, which is the fixed release.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.5	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0036, the 29th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:14 UTC First seen by agentprime
31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.