CVE-2026-40886

high

Published 2026-04-23 · Modified 2026-04-25

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.7

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.7

Description

Argo Workflows: Unchecked annotation parsing in pod informer crashes Argo Workflows Controller

Predictions

Exploit likelihood

85%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/argoproj/argo-workflows/v4	`>=4.0.0,<4.0.5`	`4.0.5`
Go	github.com/argoproj/argo-workflows/v3	`>=3.7.0,<3.7.14`	`3.7.14`
Go	github.com/argoproj/argo-workflows/v3	`>=3.6.5,<=3.6.19`

Application impact

Vendor	Product	Versions	Fixed
argoproj	argo_workflows	`{"startIncluding":"3.6.5","endIncluding":"3.6.19"}`

References

CWEs

CWE-129

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.