[3.13] gh-143921: Reject NUL, CR and LF in IMAP commands (GH-143922, GH-153067) (GH-153137)#153287
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serhiy-storchaka merged 1 commit intoJul 7, 2026
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…nGH-143922, pythonGH-153067) (pythonGH-153137) Combined backport of pythonGH-143922, which rejected all control characters, and pythonGH-153067, which narrowed the check to NUL, CR and LF. Other control characters are valid in quoted strings and are sent quoted. (cherry picked from commit 6262704) (cherry picked from commit d0921ef) (cherry picked from commit 2981822) Co-authored-by: Seth Michael Larson <seth@python.org> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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Combined backport of GH-143922, which rejected all control characters, and GH-153067, which narrowed the check to NUL, CR and LF. Other control characters are valid in quoted strings and are sent quoted.
(cherry picked from commit 2981822)
Co-authored-by: Seth Michael Larson seth@python.org
Co-authored-by: Claude Fable 5 noreply@anthropic.com