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CVE-2026-31892

WorkflowTemplate Security Bypass via podSpecPatch in Strict/Secure Reference Mode

Published: Mar 11, 2026Updated: Jul 15, 2026 Sources: CVE List NVD GHSACWE-863
8.1HIGH
NVD MITRE
EPSS Score
0.4%
Top 65.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely bypass all security settings defined in a WorkflowTemplate by including a podSpecPatch field in their Workflow submission. This works even when the controller is configured with templateReferencing: Strict, which is specifically documented as a mechanism to restrict users to admin-approved templates. The podSpecPatch field on a submitted Workflow takes precedence over the referenced WorkflowTemplate during spec merging and is applied directly to the pod spec at creation time with no security validation. This vulnerability is fixed in 4.0.2 and 3.7.11.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-863CWE-807

Affected Products

Go
package-ecosystem
github.com/argoproj/argo-workflows/v4
OSS Libraries
github.com/argoproj/argo-workflows/v3
OSS Libraries
github.com/argoproj/argo-workflows
OSS Libraries
argoproj
oss-projectaka argo workflow, argo cd, argo-cd, argo workflows
argo-workflowsOn-premDev Tool
Cloud & SaaS / container-orchestration
argo workflowsOn-prem
Cloud & SaaS / container-orchestration

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3wf5-g532-rcrr
github.com
https://access.redhat.com/errata/RHSA-2026:10184
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-31892
access.redhat.com
and 4 more references View all →

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