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CVE-2026-62290— cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials

CVSS 7.3 · High
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I. Basic Information for CVE-2026-62290

Vulnerability Information
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Vulnerability Title
cert-manager: Direct ACME Challenge resources can bypass Issuer DNS01 solver policy and use ClusterIssuer DNS credentials
Source: NVD (National Vulnerability Database)
Vulnerability Description
cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. From 1.18.0 until 1.19.6 and 1.20.3, Challenge resources under acme.cert-manager.io can be created directly by namespace users without admission validation tying the Challenge to an Order, owner reference, or Issuer-selected solver, allowing attacker-controlled Challenge.spec.solver values referencing a ClusterIssuer to bypass DNS01 solver selectors such as dnsZones, dnsNames, and matchLabels and cause cert-manager to use ClusterIssuer DNS credentials for attacker-selected provider settings and DNS names, including disclosure of X-Api-User and X-Api-Key headers for acme-dns. This issue is fixed in versions 1.19.6 and 1.20.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
cert-managercert-manager >= 1.18.0, < 1.19.6 -

II. Public POCs for CVE-2026-62290

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 12563 chars
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III. Intelligence Information for CVE-2026-62290

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Patches & Fixes for CVE-2026-62290 (4)

Vendor Advisories for CVE-2026-62290 (1)

Vendor Pages for CVE-2026-62290 (2)

IV. Related Vulnerabilities

Same product: cert-manager
Same vendor: cert-manager
Same weakness: CWE-863

V. Comments for CVE-2026-62290

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