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[3.13] gh-143925: Reject control characters in data: URL mediatypes #144111

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[3.13] gh-143925: Reject control characters in data: URL mediatypes #144111

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@sethmlarson sethmlarson commented Jan 21, 2026 •
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[3.13] pythongh-143925: Reject control characters in data: URL mediat…
2c9c746 
…ypes

(cherry picked from commit f25509e)

Co-authored-by: Seth Michael Larson <[email protected]>
@bedevere-app bedevere-app bot mentioned this pull request Jan 21, 2026
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@sethmlarson sethmlarson added type-security A security issue needs backport to 3.10 only security fixes needs backport to 3.11 only security fixes needs backport to 3.12 only security fixes and removed awaiting review labels Jan 21, 2026
@sethmlarson sethmlarson requested a review from Yhg1s January 21, 2026 15:30
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