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[3.13] gh-143916: Reject control characters in wsgiref.headers.Headers (GH-143917)#143973

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Merged
gpshead merged 1 commit intopython:3.13fromgpshead:backport-f7fceed-3.13
Jan 17, 2026

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(cherry picked from commitf7fceed)

…pythonGH-143917)* Add 'test.support' fixture for C0 control characters*pythongh-143916: Reject control characters in wsgiref.headers.Headers(cherry picked from commitf7fceed)
@gpsheadgpshead added needs backport to 3.10only security fixes needs backport to 3.11only security fixes needs backport to 3.12only security fixes labelsJan 17, 2026
@gpsheadgpshead changed the title[3.13] gh-143916: Reject control characters in wsgiref.headers.Headers[3.13] gh-143916: Reject control characters in wsgiref.headers.Headers (GH-143917)Jan 17, 2026
@bedevere-appbedevere-appbot added the type-securityA security issue labelJan 17, 2026
@gpsheadgpsheadenabled auto-merge (squash)January 17, 2026 18:04
@gpsheadgpshead merged commit22e4d55 intopython:3.13Jan 17, 2026
45 of 46 checks passed
@miss-islington-app
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Thanks@gpshead for the PR 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.11, 3.12.
🐍🍒⛏🤖

@miss-islington-app
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Sorry,@gpshead, I could not cleanly backport this to3.12 due to a conflict.
Please backport usingcherry_picker on command line.

cherry_picker 22e4d55285cee52bc4dbe061324e5f30bd4dee58 3.12

@miss-islington-app
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Sorry,@gpshead, I could not cleanly backport this to3.11 due to a conflict.
Please backport usingcherry_picker on command line.

cherry_picker 22e4d55285cee52bc4dbe061324e5f30bd4dee58 3.11

@miss-islington-app
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Sorry,@gpshead, I could not cleanly backport this to3.10 due to a conflict.
Please backport usingcherry_picker on command line.

cherry_picker 22e4d55285cee52bc4dbe061324e5f30bd4dee58 3.10

@bedevere-app
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GH-143974 is a backport of this pull request to the3.12 branch.

@bedevere-appbedevere-appbot removed the needs backport to 3.12only security fixes labelJan 17, 2026
gpshead added a commit to gpshead/cpython that referenced this pull requestJan 17, 2026
…Headers (pythonGH-143917) (pythonGH-143973)pythongh-143916: Reject control characters in wsgiref.headers.Headers  (pythonGH-143917)* Add 'test.support' fixture for C0 control characters*pythongh-143916: Reject control characters in wsgiref.headers.Headers(cherry picked from commitf7fceed)(cherry picked from commit22e4d55)Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com>Co-authored-by: Seth Michael Larson <seth@python.org>
gpshead added a commit to gpshead/cpython that referenced this pull requestJan 17, 2026
…Headers (pythonGH-143917) (pythonGH-143973)pythongh-143916: Reject control characters in wsgiref.headers.Headers  (pythonGH-143917)* Add 'test.support' fixture for C0 control characters*pythongh-143916: Reject control characters in wsgiref.headers.Headers(cherry picked from commitf7fceed)(cherry picked from commit22e4d55)Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com>Co-authored-by: Seth Michael Larson <seth@python.org>
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GH-143975 is a backport of this pull request to the3.11 branch.

@bedevere-appbedevere-appbot removed the needs backport to 3.11only security fixes labelJan 17, 2026
gpshead added a commit to gpshead/cpython that referenced this pull requestJan 17, 2026
…Headers (pythonGH-143917) (pythonGH-143973)pythongh-143916: Reject control characters in wsgiref.headers.Headers  (pythonGH-143917)* Add 'test.support' fixture for C0 control characters*pythongh-143916: Reject control characters in wsgiref.headers.Headers(cherry picked from commitf7fceed)(cherry picked from commit22e4d55)Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com>Co-authored-by: Seth Michael Larson <seth@python.org>
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GH-143976 is a backport of this pull request to the3.10 branch.

@bedevere-appbedevere-appbot removed the needs backport to 3.10only security fixes labelJan 17, 2026
Yhg1s pushed a commit that referenced this pull requestJan 19, 2026
GH-143917) (GH-143973) (#143974)* Add 'test.support' fixture for C0 control characters*gh-143916: Reject control characters in wsgiref.headers.Headers(cherry picked from commitf7fceed)(cherry picked from commit22e4d55)Co-authored-by: Seth Michael Larson <seth@python.org>
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