A widely used core infrastructure (Argo Workflows) exposure could disrupt CI/CD pipelines across many orgs.
CVE-2026-42297
Auth bypass lets authenticated users CRUD Argo Workflows Sync ConfigMaps.
Is CVE-2026-42297 being exploited?
Not confirmed. CVE-2026-42297 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-42297?
CVE-2026-42297 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-42297?
Yes. A fix has been recorded for CVE-2026-42297. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42297 affect?
CVE-2026-42297 affects Argo Workflows Sync Service (ConfigMap-backed provider), Kubernetes ConfigMaps, Argo Workflows 4.0.0–4.0.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42297?
Upgrade to 4.0.5 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated users can create/read/update/delete Sync Service ConfigMaps, enabling misconfig and potential RCE in Argo Workflows.
Patch when possible
- affected>= 4.0.0 and < 4.0.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.