PT-2026-60566 · Cert Manager · Cert-Manager

CVE-2026-62290 · Published 2026-07-16 · Updated 2026-07-16

NVD

CVSS v3.1

7.3

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

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.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-62290

Affected Products

Cert-Manager

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-62290 · Security Note
• https://github.com/cert-manager/cert-manager/pull/8941 · Note
• https://github.com/cert-manager/cert-manager/pull/8940 · Note
• https://github.com/cert-manager/cert-manager/commit/6bda47297c8fbc6b121b8b76624b668d26f1a155 · Note
• https://github.com/cert-manager/cert-manager/security/advisories/GHSA-8rvj-mm4h-c258 · Note
• https://github.com/cert-manager/cert-manager/releases/tag/v1.19.6 · Note
• https://github.com/cert-manager/cert-manager/commit/b37dbf01ecea50a0b3a19df0a7fe4c5ad6803f16 · Note
• https://github.com/cert-manager/cert-manager/releases/tag/v1.20.3 · Note