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

We fixed a bug in the CSR's name constraints construction (only applies if you have enabled the NameConstraints feature gate).
We dropped the new global.rbac.disableHTTPChallengesRole Helm option due to a bug we found, this feature will be released in v1.19 instead.

Changes since v1.18.1:

Bug or Regression

• BUGFIX: permitted URI domains were incorrectly used to set the excluded URI domains in the CSR's name constraints (#7833, @cert-manager-bot)
• Reverted adding the global.rbac.disableHTTPChallengesRole Helm option. (#7837, @cert-manager-bot)

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

We fixed a bug in the CSR's name constraints construction (only applies if you have enabled the NameConstraints feature gate).

Changes since v1.17.3:

Bug or Regression

• BUGFIX: permitted URI domains were incorrectly used to set the excluded URI domains in the CSR's name constraints (#7832, @cert-manager-bot)

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

We have added a new feature gate ACMEHTTP01IngressPathTypeExact, to allow ingress-nginx users to turn off the new default Ingress PathType: Exact behavior, in ACME HTTP01 Ingress challenge solvers.
This change fixes the following issue: #7791

We have increased the ACME challenge authorization timeout to two minutes, which we hope will fix a timeout error (error waiting for authorization), which has been reported by multiple users, since the release of cert-manager v1.16.0.
This change should fix the following issues: #7337, #7444, and #7685.

ℹ️ Be sure to review all new features and changes below, and read the full release notes carefully before upgrading.

Changes since v1.18.0:

Feature

• Added a new feature gate ACMEHTTP01IngressPathTypeExact, to allow ingress-nginx users to turn off the new default Ingress PathType: Exact behavior, in ACME HTTP01 Ingress challenge solvers. (#7810, @sspreitzer)

Bug or Regression

• ACME: Increased challenge authorization timeout to 2 minutes to fix error waiting for authorization. (#7801, @hjoshi123)

Other (Cleanup or Flake)

• Use the latest version of ingress-nginx in E2E tests to ensure compatibility (#7807, @wallrj)

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

This patch release addresses several vulnerabilities reported by the Trivy security scanner. It is built with the latest version of Go 1.23.

We have increased the ACME challenge authorization timeout to two minutes, which we hope will fix a timeout error (error waiting for authorization), which has been reported by multiple users, in: #7337, #7444, and #7685.

ℹ️ Be sure to review all new features and changes below, and read the full release notes carefully before upgrading.

Changes since v1.17.2:

Bug or Regression

• Bump Go to 1.23.10 to fix GO-2025-3749, GO-2025-3750, and GO-2025-3751 (#7799, @wallrj)
• ACME: Increased challenge authorization timeout to 2 minutes to fix error waiting for authorization (#7798, @hjoshi123)

Other (Cleanup or Flake)

• Use the latest version of ingress-nginx in E2E tests to ensure compatibility (#7808, @wallrj)

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

cert-manager 1.18 introduces several new features and breaking changes. Highlights include support for ACME certificate profiles, a new default for Certificate.Spec.PrivateKey.RotationPolicy now set to Always (breaking change), and the default Certificate.Spec.RevisionHistoryLimit now set to 1 (potentially breaking).

ℹ️ Be sure to review all new features and changes below, and read the full release notes carefully before upgrading.

Known Issues

• ACME HTTP01 challenge paths are rejected by the ingress-nginx validating webhook (#7791)

Changes since v1.17.2:

Feature

• Add config to the Vault issuer to allow the server-name to be specified when validating the certificates the Vault server presents. (#7663, @ThatsMrTalbot)
• Added app.kubernetes.io/managed-by: cert-manager label to the created Let's Encrypt account keys (#7577, @terinjokes)
• Added certificate issuance and expiration time metrics (certmanager_certificate_not_before_timestamp_seconds, certmanager_certificate_not_after_timestamp_seconds). (#7612, @solidDoWant)
• Added ingress-shim option: --extra-certificate-annotations, which sets a list of annotation keys to be copied from Ingress-like to resulting Certificate object (#7083, @k0da)
• Added the iss short name for the cert-manager Issuer resource. (#7373, @SgtCoDFish)
• Added the ciss short name for the cert-manager ClusterIssuer resource (#7373, @SgtCoDFish)
• Adds the global.rbac.disableHTTPChallengesRole helm value to disable HTTP-01 ACME challenges. This allows cert-manager to drop its permission to create pods, improving security when HTTP-01 challenges are not required. (#7666, @ali-hamza-noor)
• Allow customizing signature algorithm (#7591, @tareksha)
• Cache the full DNS response and handle TTL expiration in FindZoneByFqdn (#7596, @ThatsIvan)
• Cert-manager now uses a local fork of the golang.org/x/crypto/acme package (#7752, @wallrj)
• Add support for ACME profiles extension. (#7777, @wallrj)
• Promote the UseDomainQualifiedFinalizer feature to GA. (#7735, @jsoref)
• Switched service/servicemon definitions to use port names instead of numbers. (#7727, @jcpunk)
• The default value of Certificate.Spec.PrivateKey.RotationPolicy changed from Never to Always. (#7723, @wallrj)
• Potentially breaking: Set the default revisionHistoryLimit to 1 for the CertificateRequest revisions (#7758, @ali-hamza-noor)

Documentation

• Fix some comments (#7620, @teslaedison)

Bug or Regression

• Bump go-jose dependency to address CVE-2025-27144. (#7606, @SgtCoDFish)
• Bump golang.org/x/oauth2 to patch CVE-2025-22868. (#7638, @NicholasBlaskey)
• Bump golang.org/x/crypto to patch GHSA-hcg3-q754-cr77. (#7638, @NicholasBlaskey)
• Bump github.com/golang-jwt/jwt to patch GHSA-mh63-6h87-95cp. (#7638, @NicholasBlaskey)
• Change of the Kubernetes Ingress pathType from ImplementationSpecific to Exact for a reliable handling of ingress controllers and enhanced security. (#7767, @sspreitzer)
• Fix AWS Route53 error detection for not-found errors during deletion of DNS records. (#7690, @wallrj)
• Fix behavior when running with --namespace=<namespace>: limit the scope of cert-manager to a single namespace and disable cluster-scoped controllers. (#7678, @tsaarni)
• Fix handling of certificates with IP addresses in the commonName field; IP addresses are no longer added to the DNS subjectAlternativeName list and are instead added to the ipAddresses field as expected. (#7081, @johnjcool)
• Fix issuing of certificates via DNS01 challenges on Cloudflare after a breaking change to the Cloudflare API (#7549, @LukeCarrier)
• Fixed the certmanager_certificate_renewal_timestamp_seconds metric help text indicating that the metric is relative to expiration time, rather than Unix epoch time. (#7609, @solidDoWant)
• Fixing the service account template to incorporate boolean values for the annotations. (#7698, @ali-hamza-noor)
• Quote nodeSelector values in Helm Chart (#7579, @tobiasbp)
• Skip Gateway TLS listeners in Passthrough mode. (#6986, @vehagn)
• Upgrade golang.org/x/net fixing CVE-2025-22870. (#7619, @dependabot[bot])

Other (Cleanup or Flake)

• ACME E2E Tests: Upgraded Pebble to v2.7.0 and modified the ACME tests to match latest Pebble behaviour. (#7771, @wallrj)
• Patch the third_party/forked/acme package with support for the ACME profiles extension. (#7776, @wallrj)
• Promote the AdditionalCertificateOutputFormats feature to GA, making additional formats always enabled. (#7744, @erikgb)
• Remove deprecated feature gate ValidateCAA. Setting this feature gate is now a no-op which does nothing but print a warning log line (#7553, @SgtCoDFish)
• Update kind images to include the Kubernetes 1.33 node image (#7787, @cert-manager-bot)
• Upgrade Go to v1.24.4 (#7785, @wallrj)
• Use slices.Contains to simplify code (#7753, @cuinix)

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

⚠️ This is a pre-release. Please help the project by testing this release!

📖 Draft release notes: https://release-next--cert-manager.netlify.app/docs/releases/release-notes/release-notes-1.18/

Changes since v1.17.0:

Feature

• Add config to the Vault issuer to allow the server-name to be specified when validating the certificates the Vault server presents. (#7663, @ThatsMrTalbot)
• Added app.kubernetes.io/managed-by: cert-manager label to the created Let's Encrypt account keys (#7577, @terinjokes)
• Added certificate issuance and expiration time metrics (certmanager_certificate_not_before_timestamp_seconds, certmanager_certificate_not_after_timestamp_seconds). (#7612, @solidDoWant)
• Added ingress-shim option --extra-certificate-annotations, which sets a list of annotation keys to be copied from Ingress-like to resulting Certificate object (#7083, @k0da)
• Added the iss short name for the cert-manager Issuer resource
• Added the ciss short name for the cert-manager ClusterIssuer resource (#7373, @SgtCoDFish)
• Adds the global.rbac.disableHTTPChallengesRole helm value to disable HTTP-01 ACME challenges. This allows cert-manager to drop its permission to create pods, improving security when HTTP-01 challenges are not required. (#7666, @ali-hamza-noor)
• Allow customizing signature algorithm (#7591, @tareksha)
• Cache the full DNS response and handle TTL expiration in FindZoneByFqdn (#7596, @ThatsIvan)
• Cert-manager now uses a local fork of the golang.org/x/crypto/acme package (#7752, @wallrj)
• Add support for ACME profiles extension. (#7777, @wallrj)
• Promote the UseDomainQualifiedFinalizer feature to GA. (#7735, @jsoref)
• Switched service/servicemon definitions to use port names instead of numbers. (#7727, @jcpunk)
• The default value of Certificate.Spec.PrivateKey.RotationPolicy changed from Never to Always. (#7723, @wallrj)
• Set the default revisionHistoryLimit to 1 for the CertificateRequest revisions (#7758, @ali-hamza-noor)

Documentation

• Fix some comments (#7620, @teslaedison)

Bug or Regression

• Bump go-jose dependency to address CVE-2025-27144. (#7606, @SgtCoDFish)
• Bump golang.org/x/oauth2 to patch CVE-2025-22868.
• Bump golang.org/x/crypto to patch GHSA-hcg3-q754-cr77.
• Bump github.com/golang-jwt/jwt to patch GHSA-mh63-6h87-95cp. (#7638, @NicholasBlaskey)
• Change of the Kubernetes Ingress pathType from ImplementationSpecific to Exact for a reliable handling of ingress controllers and enhanced security. (#7767, @sspreitzer)
• Fix AWS Route53 error detection for not-found errors during deletion of DNS records. (#7690, @wallrj)
• Fix behavior when running with --namespace=<namespace>: limit the scope of cert-manager to a single namespace and disable cluster-scoped controllers. (#7678, @tsaarni)
• Fix handling of certificates with IP addresses in the commonName field; IP addresses are no longer added to the DNS subjectAlternativeName list and are instead added to the ipAddresses field as expected. (#7081, @johnjcool)
• Fix issuing of certificates via DNS01 challenges on Cloudflare after a breaking change to the Cloudflare API (#7549, @LukeCarrier)
• Fixed the certmanager_certificate_renewal_timestamp_seconds metric help text indicating that the metric is relative to expiration time, rather than Unix epoch time. (#7609, @solidDoWant)
• Fixing the service account template to incorporate boolean values for the annotations. (#7698, @ali-hamza-noor)
• Quote nodeSelector values in Helm Chart (#7579, @tobiasbp)
• Skip Gateway TLS listeners in Passthrough mode. (#6986, @vehagn)
• Upgrade golang.org/x/net fixing CVE-2025-22870. (#7619, @depandabot[bot])

Other (Cleanup or Flake)

• ACME E2E Tests: Upgraded Pebble to v2.7.0 and modified the ACME tests to match latest Pebble behavior. (#7771, @wallrj)
• Patch the third_party/forked/acme package with support for the ACME profiles extension. (#7776, @wallrj)
• Promote the AdditionalCertificateOutputFormats feature to GA, making additional formats always enabled. (#7744, @erikgb)
• Remove deprecated feature gate ValidateCAA. Setting this feature gate is now a no-op which does nothing but print a warning log line (#7553, @SgtCoDFish)
• Upgrade golang.org/x/net fixing CVE-2025-22870. (#7619, @depandabot[bot])
• Use slices.Contains to simplify code (#7753, @cuinix)

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

⚠️ This is a pre-release. Please help the project by testing this release!

Changes since v1.17.0:

Feature

• Add config to the Vault issuer to allow the server-name to be specified when validating the certificates the Vault server presents. (#7663, @ThatsMrTalbot)
• Added app.kubernetes.io/managed-by: cert-manager label to the created Let's Encrypt account keys (#7577, @terinjokes)
• Added certificate issuance and expiration time metrics (certmanager_certificate_not_before_timestamp_seconds, certmanager_certificate_not_after_timestamp_seconds). (#7612, @solidDoWant)
• Added ingress-shim option:
  • --extra-certificate-annotations which sets list of annotation keys to be copied from Ingress-like to resulting Certificate object (#7083, @k0da)
• Added the iss short name for the cert-manager Issuer resource
  Added the ciss short name for the cert-manager ClusterIssuer resource (#7373, @SgtCoDFish)
• Adds the global.rbac.disableHTTPChallengesRole helm value to disable HTTP-01 ACME challenges. This allows cert-manager to drop its permission to create pods, improving security when HTTP-01 challenges are not required. (#7666, @ali-hamza-noor)
• Allow customizing signature algorithm (#7591, @tareksha)
• Cache the full DNS response and handle TTL expiration in FindZoneByFqdn (#7596, @ThatsIvan)
• Promote the UseDomainQualifiedFinalizer feature to GA. (#7735, @jsoref)
• The default value of Certificate.Spec.PrivateKey.RotationPolicy changed from Never to Always. (#7723, @wallrj)

Documentation

• Fix some comments (#7620, @teslaedison)

Bug or Regression

• Bump go-jose dependency to address CVE-2025-27144. (#7606, @SgtCoDFish)
• Bump golang.org/x/oauth2 to patch CVE-2025-22868.
• Bump golang.org/x/crypto to patch GHSA-hcg3-q754-cr77.
• Bump github.com/golang-jwt/jwt to patch GHSA-mh63-6h87-95cp. (#7638, @NicholasBlaskey)
• Fix AWS Route53 error detection for not-found errors during deletion of DNS records. (#7690, @wallrj)
• Fix behavior when running with --namespace=: limit the scope of cert-manager to a single namespace and disable cluster-scoped controllers. (#7678, @tsaarni)
• Fix handling of certificates with IP addresses in the commonName field; IP addresses are no longer added to the DNS subjectAlternativeName list and are instead added to the ipAddresses field as expected. (#7081, @johnjcool)
• Fix issuing of certificates via DNS01 challenges on Cloudflare after a breaking change to the Cloudflare API (#7549, @LukeCarrier)
• Fixed the certmanager_certificate_renewal_timestamp_seconds metric help text indicating that the metric is relative to expiration time, rather than Unix epoch time. (#7609, @solidDoWant)
• Fixing the service account template to incorporate boolean values for the annotations. (#7698, @ali-hamza-noor)
• Skip Gateway TLS listeners in Passthrough mode. (#6986, @vehagn)

Other (Cleanup or Flake)

• Promote the AdditionalCertificateOutputFormats feature to GA, making additional formats always enabled. (#7744, @erikgb)
• Remove deprecated feature gate ValidateCAA. Setting this feature gate is now a no-op which does nothing but print a warning log line (#7553, @SgtCoDFish)
• Upgrade golang.org/x/net fixing CVE-2025-22870. (#7619, @depandabot[bot])

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

This patch release addresses several vulnerabilities reported by the Trivy security scanner. It is built with the latest version of Go 1.23 and includes various dependency updates.

📖 Read the full cert-manager 1.12 release notes, before installing or upgrading.

Changes since v1.12.16

Bug or Regression

• Bump Go to v1.23.8 to fix CVE-2025-22871 (#7709, @wallrj)
• Bump golang.org/x/net to v0.38.0 to fix CVE-2025-22872 (#7709, @wallrj)
• Bump github.com/golang-jwt/jwt/v4 to v4.5.2 to fix CVE-2025-30204 (#7709, @wallrj)
• Bump go-jose to address CVE-2025-27144 (#7597, @SgtCoDFish)
• Bump golang.org/x/net to address CVE-2025-22870 reported by Trivy (#7624, @SgtCoDFish)
• Bump golang.org/x/net to address CVE-2025-22870 reported by Trivy (#7623, @SgtCoDFish)

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

This patch release addresses several vulnerabilities reported by the Trivy security scanner. It is built with the latest version of Go 1.23 and includes various dependency updates.

📖 Read the full cert-manager 1.17 release notes, before installing or upgrading.

Changes since v1.17.1

Bug or Regression

• Bump Go to v1.23.8 to fix CVE-2025-22871 (#7701, @wallrj)
• Bump go-jose dependency to address CVE-2025-27144 (#7603, @SgtCoDFish)
• Bump golang.org/x/net to address CVE-2025-22870 reported by Trivy (#7622, @SgtCoDFish)
• Bump golang.org/x/net to fix CVE-2025-22872 (#7703, @wallrj)
• Bump golang.org/x/oauth2 to patch CVE-2025-22868 (#7692, @lentzi90)
• Bump golang.org/x/crypto to patch GHSA-hcg3-q754-cr77 (#7692, @lentzi90)
• Bump github.com/golang-jwt/jwt to patch GHSA-mh63-6h87-95cp (#7692, @lentzi90)

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

This patch release addresses several vulnerabilities reported by the Trivy security scanner. It is built with the latest version of Go 1.23 and includes various dependency updates.

📖 Read the full cert-manager 1.16 release notes, before installing or upgrading.

Changes since v1.16.4:

Bug or Regression

• Bump Go to v1.23.8 to fix CVE-2025-22871 (#7706, @wallrj)
• Bump github.com/golang-jwt/jwt/v5 to v5.2.2 to fix CVE-2025-30204 (#7708, @wallrj)
• Bump golang.org/x/net to fix CVE-2025-22872 (#7707, @wallrj)
• Bump go-jose dependency to address CVE-2025-27144 (#7602, @SgtCoDFish)
• Bump golang.org/x/net to address CVE-2025-22870 reported by Trivy (#7623, @SgtCoDFish)