Improper Removal of Sensitive Information Before Storage or Transfer in Argo CD - CVE-2026-43824

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Main Vulnerability Database Vulnerabilities #VU129011

Improper Removal of Sensitive Information Before Storage or Transfer in Argo CD - CVE-2026-43824

Published: May 2, 2026


Vulnerability identifier: #VU129011
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-43824
CWE-ID: CWE-212
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Argo CD
Software vendor:
Argo

Description

The vulnerability allows a remote user to disclose sensitive information and affect integrity across a changed scope.

The vulnerability exists due to improper removal of sensitive information before transfer in the ServerSideDiff endpoint when processing Server-Side Apply dry-run responses for Secrets. A remote user can call the ServerSideDiff endpoint to disclose sensitive information and affect integrity across a changed scope.

Exploitation requires Argo CD application get permissions, and the defense bypass occurs when the Application has the annotation argocd.argoproj.io/compare-options: IncludeMutationWebhook=true. Secret extraction succeeds when the Secret data fields are owned by at least one non-Argo CD server-side apply field manager.


Remediation

Install security update from vendor's website.

External links