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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-42297

36
FAUCET Score

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 Sync Service's ConfigMap-backed provider (server/sync/sync_cm.go) performs zero authorization checks on all CRUD operations (create, read, update, delete). Any authenticated user — including those using fake Bearer tokens — can create, read, update, and delete Kubernetes ConfigMaps containing synchronization limits. This issue has been patched in version 4.0.5.

First published: May 9, 2026Last modified: May 12, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 4.0.5CPE matchmatch criteria
cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 4.0

8.5HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
40.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 30th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/argoproj/argo-workflows/v4Fixed in: 4.0.5

Vendor Advisories (1)

goGHSA-xchc-cqwg-g76qhigh

Argo has Missing Authorization in its Sync ConfigMap Provider

May 4, 2026

References

access.redhat.com / security/cve/CVE-2026-42297
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-42297.json
github.com / argoproj/argo-workflows/commit/09fff05e0830c14a5e36cc40597ad84881db1ab6
Patch
github.com / argoproj/argo-workflows/releases/tag/v4.0.5
Release Notes
github.com / argoproj/argo-workflows/security/advisories/GHSA-xchc-cqwg-g76q
ExploitVendor Advisory