blog: add June 2026 security releases announcement

[aduh95]

Refs: https://github.com/nodejs-private/security-release/pull/72

Description

Validation

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Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run pnpm format to ensure the code follows the style guide.
• I have run pnpm test to check if all tests are passing.
• I have run pnpm build to check if the website builds without errors.
• I've covered new added functionality with unit tests if necessary.

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Project	Deployment	Actions	Updated (UTC)
nodejs-org	Ready	Preview	Jun 10, 2026 2:37pm

[cursor]

PR Summary

Low Risk
Documentation-only addition of a public security advisory announcement; no application or runtime code changes.

Overview
Adds a new vulnerability blog post at apps/site/pages/en/blog/vulnerability/june-2026-security-releases.md to pre-announce Node.js security releases planned for Wednesday, June 17, 2026.

The post states that 26.x, 24.x, and 22.x will get fixes for one or more issues, with HIGH as the highest severity on each line. It includes standard guidance on EOL versions, links to the release schedule and security reporting process, and points readers to the nodejs-sec mailing list.

Refs the private security release coordination in nodejs-private/security-release#72.

^{Reviewed by Cursor Bugbot for commit 789ebd8. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.71%. Comparing base (b2772ae) to head (789ebd8).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8954      +/-   ##
==========================================
+ Coverage   75.66%   75.71%   +0.04%     
==========================================
  Files         102      102              
  Lines        8676     8676              
  Branches      322      321       -1     
==========================================
+ Hits         6565     6569       +4     
+ Misses       2108     2104       -4     
  Partials        3        3              

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[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🔴 71	🟢 96	🟢 96	🟢 100	🔗
/en/about	🟢 100	🟢 94	🟢 96	🟠 88	🔗
/en/about/previous-releases	🟢 99	🟢 97	🟢 96	🟢 100	🔗
/en/download	🟢 100	🟢 96	🟠 81	🟢 100	🔗
/en/download/archive/current	🟢 100	🟢 97	🟢 100	🟢 100	🔗
/en/blog	🟢 100	🟢 97	🟢 96	🟢 100	🔗