Is CVE-2026-42297 actively exploited?

No active exploitation of CVE-2026-42297 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42297 be exploited remotely?

Yes. CVE-2026-42297 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42297?

CVE-2026-42297 has a CVSS score of 8.3 (HIGH).

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HIGH

CVE-2026-42297

CWE-862Published: May 9, 2026· Updated: May 15, 2026

8.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.9th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-42297 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.3.