CVEvulnerability

CVE-2026-40886

7.7 HIGH Published 2026-04-23 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-04-23
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weaknesses
CWE-1285, CWE-129

Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 3.6.5 to 4.0.4, an unchecked array index in the pod informer's podGCFromPod() function causes a controller-wide panic when a workflow pod carries a malformed workflows.argoproj.io/pod-gc-strategy annotation. Because the panic occurs inside an informer goroutine (outside the controller's recover() scope), it crashes the entire controller process. The poisoned pod persists across restarts, causing a crash loop that halts all workflow processing until the pod is manually deleted. This vulnerability is fixed in 4.0.5 and 3.7.14.

Affected configurations

• argoproj argo workflows (>= 3.6.5 <= 3.6.19) • argoproj argo workflows (>= 3.7.0 < 3.7.14) • argoproj argo workflows (>= 4.0.0 < 4.0.5)

Related

Weakness · CWE (2)

  • CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input weakness
  • CWE-129 Improper Validation of Array Index weakness

References