cve.bz

CVE-2026-62290

7.3 highEPSS 0.1%

High (7.3) in linuxfoundation cert-manager. EPSS 0.1% chance of exploitation in the next 30 days. Fixed in github.com/cert-manager/cert-manager 1.19.6, 1.20.3.

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.

Severity

CVSS 3.1

7.3 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
EPSS
0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-31)
CWE
CWE-863
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-8rvj-mm4h-c258Gogithub.com/cert-manager/cert-manager>=1.18.0 <1.19.61.19.6
GHSA-8rvj-mm4h-c258Gogithub.com/cert-manager/cert-manager>=1.20.0-alpha.0 <1.20.31.20.3

References

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