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TI-2026-84806 Aliases CVE-2026-121621GHSA-3cw2-hq94-57x5

Command injection in Argo CD Image Updater via SSH repository proxy

Priority MEDIUM 44CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-78.

Summary

Versions of argocd-image-updater from 0 before 1.4.1 are affected. A proxy URL configured on an SSH Git repository is passed unsanitized into a shell-interpreted SSH command, an OS command injection flaw (CWE-78). An attacker who can set a malicious proxy value can run arbitrary commands and access credentials in the Image Updater process.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01821 78th percentileScored 2026-11-07
Fix Partial argocd-image-updater: 1.4.1Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—argocd-image-updaterbefore 1.4.11.4.1Patch availableCNA
Red HatRed Hat OpenShift GitOps——No fix listedCNA
Red HatRed Hat OpenShift GitOps——Not affectedCNA
  • argocd-image-updater Vendor— Affected before 1.4.1 Fixed in 1.4.1 Patch available CNA
  • Red Hat OpenShift GitOps VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift GitOps VendorRed Hat Affected — Fixed in — Not affected CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:/a:redhat:openshift_gitops:11—Red Hat
  • cpe:/a:redhat:openshift_gitops:1 Versions 1 — ·Red Hat

Remediation

Upgrade argocd-image-updater to version 1.4.1 or later. Red Hat has no remediation plan available for Red Hat OpenShift GitOps. The sources list no fixed version for Red Hat OpenShift GitOps.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA argocd-image-updater Fixed in 1.4.1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift GitOpsAffectedNo fix yet
Not affected: 1 product
  • Red Hat OpenShift GitOps

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121621
  2. 2026-11-03 Alias added: GHSA-3cw2-hq94-57x5
  3. 2026-11-04 Affected versions changed · Red Hat
  4. 2026-11-04 CVSS score added · Red Hat
  5. 2026-11-04 CISA SSVC decision points changed
  6. 2026-11-04 Priority changed: MEDIUM → LOW
  7. 2026-11-05 Priority changed: LOW → MEDIUM
  8. 2026-11-05 CISA SSVC decision points changed
  9. 2026-11-05 CISA SSVC decision points changed
  10. 2026-11-06 Fix available: [email protected] · CNA
  11. 2026-11-06 1 new reference · CNA

References

Other 4

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences