Vulnerability in Argo CD (CVE-2026-15416)
Summary
Vulnerability in Argo CD (CVE-2026-15416). Confidential information can be exposed externally.
Original description
The description as published by the source.
A flaw was identified in Argo CD, the GitOps engine used by Red Hat OpenShift GitOps, that could allow an unauthenticated attacker with network access to the Argo CD repo-server to achieve remote code execution. Under certain conditions, the attacker may then manipulate cached data to deploy malicious Kubernetes resources to managed clusters, potentially resulting in complete cluster compromise.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-15416 has been found in Argo CD.
Confidential information can be exposed externally. CVSS score: 8.9/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Argo CD CVE-2026-15416" on the vendor's site.
CVE-2026-15416 (Argo CD) — CWE-306 / CVSS v3 8.9
Attack vector: adjacent-network / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-306) exists in Argo CD.
Check the vendor advisory for the affected versions of Argo CD.
Severity: High (CVSS 8.9/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Argo CD を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory access.redhat.com
- advisory github.com
- advisory access.redhat.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- report bugzilla.redhat.com
- web thehackernews.com
- web synacktiv.com
- web access.redhat.com
- web catalog.redhat.com