CLEANSTART-2026-SN62789: Impact: A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (

Q: What configurations are exposed to this issue?

The issue is triggered when a single segment contains three or more parameters separated by a character other than a period. Configurations that do not use this parameter pattern are not described as affected.

Q: Does exploitation require authentication or user interaction?

No. The provided vector indicates network access, low attack complexity, no privileges required, and no user interaction.

Q: What is the expected security impact?

The reported impact is availability loss only: confidentiality and integrity are listed as unaffected, while availability impact is high.

Published Nov 11, 2026

Updated

Security vulnerability affects the argo-workflows package. Impact: A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.

Affected Software

2 affected componentsFixes available

cleanstart/argo-workflows<4.1.6-r1

4.1.6-r1

cleanstart/argo-workflows<4.0.15-r2

4.0.15-r2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade cleanstart/argo-workflows to a version that resolves this vulnerability.
Fixed in 4.1.6-r1
Upgrade
Upgrade cleanstart/argo-workflows to a version that resolves this vulnerability.
Fixed in 4.0.15-r2

Event History

Nov 11, 2026

Advisory Published

via OSV·12:41 AM

Data Sourced

via OSV·12:41 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-4867

Frequently Asked Questions

What configurations are exposed to this issue?

The issue is triggered when a single segment contains three or more parameters separated by a character other than a period. Configurations that do not use this parameter pattern are not described as affected.

Does exploitation require authentication or user interaction?

No. The provided vector indicates network access, low attack complexity, no privileges required, and no user interaction.

What is the expected security impact?

The reported impact is availability loss only: confidentiality and integrity are listed as unaffected, while availability impact is high.

CLEANSTART-2026-SN62789: Impact: A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

What configurations are exposed to this issue?

Does exploitation require authentication or user interaction?

What is the expected security impact?

Company

Resources

Contact

Frequently Asked Questions

What configurations are exposed to this issue?

Does exploitation require authentication or user interaction?

What is the expected security impact?