[release-v1.21][gomod]: Bump github.com/cert-manager/cert-manager from 1.16.3 to 1.19.3

[dependabot]

Bumps github.com/cert-manager/cert-manager from 1.16.3 to 1.19.3.

Release notes

Sourced from github.com/cert-manager/cert-manager's releases.

v1.19.3

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. (#8415, @​cert-manager-bot)
• Fixed an issue where HTTP-01 challenges failed when the Host header contained an IPv6 address. This means that users can now issue IP address certificates for IPv6 address subjects. (#8436, @​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. (#8468, @​SgtCoDFish)

Other (Cleanup or Flake)

• Bump go to 1.25.6 (#8459, @​SgtCoDFish)

v1.19.2

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 1.19 release notes on the cert-manager.io website before upgrading.

Changes since v1.19.1

Bug or Regression

• Address false positive vulnerabilities CVE-2025-47914 and CVE-2025-58181 which were reported by Trivy. (#8283, @​SgtCoDFish)
• Update Go to v1.25.5 to fix CVE-2025-61727 and CVE-2025-61729 (#8294, @​wallrj-cyberark)
• Update global.nodeSelector to helm chart to perform a merge and allow for a single nodeSelector to be set across all services. (#8233, @​cert-manager-bot)

Other (Cleanup or Flake)

• Update cert-manager's ACME client, forked from golang/x/crypto (#8270, @​SgtCoDFish)
• Updated Debian 12 distroless base images (#8326, @​wallrj-cyberark)

v1.19.1

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

We reverted the CRD-based API defaults for Certificate.Spec.IssuerRef and CertificateRequest.Spec.IssuerRef after they were found to cause unexpected certificate renewals after upgrading to 1.19.0. We will try re-introducing these API defaults in cert-manager 1.20. We fixed a bug that caused certificates to be re-issued unexpectedly if the issuerRef kind or group was changed to one of the "runtime" default values. We upgraded Go to 1.25.3 to address the following security vulnerabilities: CVE-2025-61724, CVE-2025-58187, CVE-2025-47912, CVE-2025-58183, CVE-2025-61723, CVE-2025-58186, CVE-2025-58185, CVE-2025-58188, and CVE-2025-61725.

📖 Read the full 1.19 release notes on the cert-manager.io website before upgrading.

Changes since v1.19.0:

Bug or Regression

... (truncated)

Commits

• d4faed2 Merge pull request #8468 from SgtCoDFish/release-1.19-fqdn-patch
• 8b62c22 [release-1.19] security: address GHSA-gx3x-vq4p-mhhv
• 866f955 Merge pull request #8459 from SgtCoDFish/release-1.19-bumpgo
• 0c04433 [release-1.19] Bump base images with hack/latest-base-images.sh
• e4556ab [release-1.19] bump go to 1.25.6
• 845a645 Merge pull request #8436 from cert-manager-bot/cherry-pick-8424-to-release-1.19
• acd3120 fix(HTTP-01): handling of IPv6 address literals
• d678763 Merge pull request #8421 from SgtCoDFish/release-1.19-bumpkind
• 3caf308 [release-1.19] bump kind and bump kind images
• b2ccdb8 Merge pull request #8415 from cert-manager-bot/cherry-pick-8403-to-release-1.19
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[creydr]

Closing as we have this in the group update now: #1795

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