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v1.20.4: patch release notes - #2291

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wallrj:release-notes-1.20.4

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@wallrj

@wallrj wallrj commented Sep 15, 2026

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Summary

  • Add v1.20.4 release notes to release-notes-1.20.md. This is a CVE-only release, so the notes are written by hand: only #9315 and #9152 carry a release-note block, and the rest are Renovate and base-image bumps that the generator from Add release-notes generator script and Makefile target #1785 skips
  • Add a section explaining the two golang.org/x/crypto/ssh findings (CVE-2026-56855, CVE-2026-78662) and GO-2026-5932 that image scanners will still report on v1.20.4, why they do not affect cert-manager, and why we are not raising the Go language version in a patch release to take the fix
  • variables.json is unchanged. v1.21.2 stays cert_manager_latest_version
  • Add multiplexer and openpgp to .spelling

Motivation

Part of the cert-manager v1.20.4 release process.

Test plan

  • Netlify deploy preview renders the v1.20.4 section correctly
  • cspell passes on release-notes-1.20.md

/hold until v1.20.4 is published

[Claude Fable 5.1]

Hand-written, since none of the commits on release-1.20 since v1.20.3
carries a release-note block apart from #9315 and #9152. Explains the
two golang.org/x/crypto/ssh findings that stay in this release and why.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Signed-off-by: Richard Wall <richard@the-moon.net>
@cert-manager-prow cert-manager-prow Bot added do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. dco-signoff: yes Indicates that all commits in the pull request have the valid DCO sign-off message. labels Sep 15, 2026
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[APPROVALNOTIFIER] This PR is NOT APPROVED

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@cert-manager-prow cert-manager-prow Bot added the size/M Denotes a PR that changes 30-99 lines, ignoring generated files. label Sep 15, 2026
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dco-signoff: yes Indicates that all commits in the pull request have the valid DCO sign-off message. do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. size/M Denotes a PR that changes 30-99 lines, ignoring generated files.

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