What is CVE-2026-42295?
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, the workflow executor logs all artifact repository credentials (S3 access keys, secret keys, GCS service account keys, Azure account keys, Git passwords, etc.) in plaintext on artifact operation. Any user with read access to workflow pod logs can extract these credentials. This issue has been patched in version 4.0.5.
The record classifies CVE-2026-42295 under weakness class CWE-522. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 171 days ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 8.5 — High (derived from score)
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 - EPSS (FIRST)
- 0.4% probability of exploitation in the next 30 days, higher than 32.6% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 7.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-05-09, last modified 2026-05-11
Is CVE-2026-42295 being exploited?
Weaponised exploit code for CVE-2026-42295 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 21 in the Threadlinqs vulnerability feed.
- trickest/cve (trickest)
Affected products and versions
- argoproj: argo-workflows
Affected software packages:
go:github.com/argoproj/argo-workflows/v4— patched in 4.0.5
How to fix CVE-2026-42295
Fixed versions are recorded for 1 package: go:github.com/argoproj/argo-workflows/v4 4.0.5. No vendor patch reference has been recorded for CVE-2026-42295 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-42295
1 tracked threat in the Threadlinqs corpus references CVE-2026-42295, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on .