fix(helm): update cert-manager ( v1.18.3 → v1.18.6 )

[renovate]

This PR contains the following updates:

Package	Update	Change
cert-manager (source)	patch	v1.18.3 → v1.18.6

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Release Notes

cert-manager/cert-manager (cert-manager)

v1.18.6

Compare Source

cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.

v1.18.6 is a simple patch release to fix some reported vulnerabilities, most notably CVE-2025-68121.

NB: We didn't attempt to patch CVE-2026-24051 but that vulnerability affects macOS only, so cert-manager will be unaffected.

Changes by Kind

Bug or Regression

• Bump Go to address CVE-2025-68121 (#​8525, @​SgtCoDFish)

v1.18.5

Compare Source

cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.

This release contains three bug fixes, including a fix for the MODERATE severity DoS issue in GHSA-gx3x-vq4p-mhhv. All users should upgrade to the latest release.

Changes by Kind

Bug or Regression

• Fixed an infinite re-issuance loop that could occur when an issuer returns a certificate with a public key that doesn't match the CSR. The issuing controller now validates the certificate before storing it and fails with backoff on mismatch. (#​8414, @​cert-manager-bot)
• Fixed an issue where HTTP-01 challenges failed when the Host header contains an IPv6 address. This means that users can now issue IP address certificates for IPv6 address subjects. (#​8437, @​cert-manager-bot)
• Security (MODERATE): Fix a potential panic in the cert-manager controller when a DNS response in an unexpected order was cached. If an attacker was able to modify DNS responses (or if they controlled the DNS server) it was possible to cause denial of service for the cert-manager controller. (#​8467, @​SgtCoDFish)

Other (Cleanup or Flake)

• Bump go to 1.24.12 (#​8460, @​SgtCoDFish)

v1.18.4

Compare Source

cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.

We updated Go to fix some vulnerabilities in the standard library.

📖 Read the full 1.18 release notes on the cert-manager.io website before upgrading.

Changes since v1.18.3

Bug or Regression

• Address false positive vulnerabilities CVE-2025-47914 and CVE-2025-58181 which were reported by Trivy. (#​8282, @​SgtCoDFish)
• Update Go to v1.24.11 to fix CVE-2025-61727 and CVE-2025-61729 (#​8295, @​wallrj-cyberark)

Other (Cleanup or Flake)

• Update cert-manager's ACME client, forked from golang/x/crypto (#​8271, @​SgtCoDFish)
• Updated Debian 12 distroless base images (#​8328, @​wallrj-cyberark)

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[github-actions]

--- kubernetes/apps/cert-manager/cert-manager/app Kustomization: flux-system/cert-manager HelmRelease: cert-manager/cert-manager

+++ kubernetes/apps/cert-manager/cert-manager/app Kustomization: flux-system/cert-manager HelmRelease: cert-manager/cert-manager

@@ -13,13 +13,13 @@

     spec:
       chart: cert-manager
       sourceRef:
         kind: HelmRepository
         name: jetstack
         namespace: flux-system
-      version: v1.18.3
+      version: v1.18.6
   install:
     remediation:
       retries: 3
   interval: 30m
   upgrade:
     cleanupOnFail: true

[github-actions]

--- HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager-cainjector

+++ HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager-cainjector

@@ -31,13 +31,13 @@

       securityContext:
         runAsNonRoot: true
         seccompProfile:
           type: RuntimeDefault
       containers:
       - name: cert-manager-cainjector
-        image: quay.io/jetstack/cert-manager-cainjector:v1.18.3
+        image: quay.io/jetstack/cert-manager-cainjector:v1.18.6
         imagePullPolicy: IfNotPresent
         args:
         - --v=2
         - --leader-election-namespace=kube-system
         ports:
         - containerPort: 9402
--- HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager

+++ HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager

@@ -31,19 +31,19 @@

       securityContext:
         runAsNonRoot: true
         seccompProfile:
           type: RuntimeDefault
       containers:
       - name: cert-manager-controller
-        image: quay.io/jetstack/cert-manager-controller:v1.18.3
+        image: quay.io/jetstack/cert-manager-controller:v1.18.6
         imagePullPolicy: IfNotPresent
         args:
         - --v=2
         - --cluster-resource-namespace=$(POD_NAMESPACE)
         - --leader-election-namespace=kube-system
-        - --acme-http01-solver-image=quay.io/jetstack/cert-manager-acmesolver:v1.18.3
+        - --acme-http01-solver-image=quay.io/jetstack/cert-manager-acmesolver:v1.18.6
         - --max-concurrent-challenges=60
         - --dns01-recursive-nameservers-only=true
         - --dns01-recursive-nameservers=https://1.1.1.1:443/dns-query,https://1.0.0.1:443/dns-query
         ports:
         - containerPort: 9402
           name: http-metrics
--- HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager-webhook

+++ HelmRelease: cert-manager/cert-manager Deployment: cert-manager/cert-manager-webhook

@@ -31,13 +31,13 @@

       securityContext:
         runAsNonRoot: true
         seccompProfile:
           type: RuntimeDefault
       containers:
       - name: cert-manager-webhook
-        image: quay.io/jetstack/cert-manager-webhook:v1.18.3
+        image: quay.io/jetstack/cert-manager-webhook:v1.18.6
         imagePullPolicy: IfNotPresent
         args:
         - --v=2
         - --secure-port=10250
         - --dynamic-serving-ca-secret-namespace=$(POD_NAMESPACE)
         - --dynamic-serving-ca-secret-name=cert-manager-webhook-ca
--- HelmRelease: cert-manager/cert-manager Job: cert-manager/cert-manager-startupapicheck

+++ HelmRelease: cert-manager/cert-manager Job: cert-manager/cert-manager-startupapicheck

@@ -31,13 +31,13 @@

       securityContext:
         runAsNonRoot: true
         seccompProfile:
           type: RuntimeDefault
       containers:
       - name: cert-manager-startupapicheck
-        image: quay.io/jetstack/cert-manager-startupapicheck:v1.18.3
+        image: quay.io/jetstack/cert-manager-startupapicheck:v1.18.6
         imagePullPolicy: IfNotPresent
         args:
         - check
         - api
         - --wait=1m
         - -v