CVE-2025-66626
December 09, 2025
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Versions 3.6.13 and below and versions 3.7.0 through 3.7.4, contain unsafe untar code that handles symbolic links in archives. Concretely, the computation of a link's target and the subsequent check are flawed. An attacker can overwrite the file /var/run/argo/argoexec with a script of their choice, which would be executed at the pod's start. The patch deployed against CVE-2025-62156 is ineffective against malicious archives containing symbolic links. This issue is fixed in versions 3.6.14 and 3.7.5.
Affected Packages
https://github.com/argoproj/argo-workflows.git (GITHUB):
Affected version(s) >=v0.1.0 <v3.6.14Fix Suggestion:
Update to version v3.6.14https://github.com/argoproj/argo-workflows.git (GITHUB):
Affected version(s) >=v3.7.0 <v3.7.5Fix Suggestion:
Update to version v3.7.5github.com/argoproj/argo-workflows/v3 (GO):
Affected version(s) >=v3.0.0-rc1 <v3.6.14Fix Suggestion:
Update to version v3.6.14github.com/argoproj/argo-workflows/v3 (GO):
Affected version(s) >=v3.7.0 <v3.7.5Fix Suggestion:
Update to version v3.7.5Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.09
