[3.14] gh-143916: Reject control characters in wsgiref.headers.Headers (GH-143917)#143972
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gpshead merged 1 commit intopython:3.14from Jan 17, 2026
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…pythonGH-143917) * Add 'test.support' fixture for C0 control characters * pythongh-143916: Reject control characters in wsgiref.headers.Headers (cherry picked from commit f7fceed) Co-authored-by: Seth Michael Larson <seth@python.org>
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Verified against python/cpython that every CVE patch on the 3.12 fork has a 3.14-branch backport PR that merged before 3.14.4's release on 2026-04-07: CVE-2026-0672 → PR python/cpython#144089 (merged 2026-01-23) CVE-2026-0865 → PRs python/cpython#143972 + #144761 (merged 2026-01-17 / 02-21) CVE-2026-1299 → PR python/cpython#144182 (merged 2026-01-25) CVE-2026-4519 → PRs python/cpython#146214 + #148042 (merged 2026-03-23 / 04-03) The CVE-2025-* patches are even older and were already in 3.14.0 (GA 2025-10). Carrying patches we don't need adds hunk-maintenance cost, rebase risk, and auditor confusion with no upside. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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(cherry picked from commit f7fceed)
Co-authored-by: Seth Michael Larson seth@python.org