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CVE-2026-121621VulnerabilityPublished

Argo CD Image Updater · Command Injection Vulnerability Was Found

Source GCVE Database

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Authoritative record:CVE-2026-121621· High 8.8

Not known to be exploited · CVSS 8.8 High.

Data as of 3 Nov 2026, 22:42 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat OpenShift GitOpsopenshift-gitops-1/argocd-image-updater-rhel9Affected–Fixed in–
Red Hat OpenShift GitOpsopenshift-gitops-1/gitops-rhel9-operatorAffected–Fixed in–

AI-suggested

As of the latest Red Hat advisory, a fix is under investigation and may be released in the near future. Users should monitor Red Hat advisories for updates. Until a fix is available, avoid configuring untrusted proxy URLs in SSH Git repository settings for Argo CD Image Updater. Applying mitigations that restrict or sanitize proxy URL inputs may reduce risk.

Description

A command injection vulnerability exists in Argo CD Image Updater where a proxy URL configured on an SSH Git repository is unsanitized and passed into a shell-interpreted SSH command. This allows an attacker who can set a malicious proxy value to inject shell metacharacters, execute arbitrary commands, and access credentials within the Image Updater process context.

References

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