[3.14] gh-145264: Do not ignore excess Base64 data after the first padded quad (GH-145267)#146326
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ambv merged 1 commit intoMar 23, 2026
python:3.14python/cpython:3.14from
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[3.14] gh-145264: Do not ignore excess Base64 data after the first padded quad (GH-145267)#146326ambv merged 1 commit intopython:3.14python/cpython:3.14from serhiy-storchaka:backport-4561f64-3.14serhiy-storchaka/cpython:backport-4561f64-3.14Copy head branch name to clipboard
ambv merged 1 commit into
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…rst padded quad (pythonGH-145267) Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc) no longer ignores excess data after the first padded quad in non-strict (default) mode. Instead, in conformance with RFC 4648, it ignores the pad character, "=", if it is present before the end of the encoded data. (cherry picked from commit 4561f64) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This was referenced Mar 23, 2026
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Thanks @serhiy-storchaka for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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Mar 23, 2026
…rst padded quad (pythonGH-145267) (pythonGH-146326) Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc) no longer ignores excess data after the first padded quad in non-strict (default) mode. Instead, in conformance with RFC 4648, it ignores the pad character, "=", if it is present before the end of the encoded data. (cherry picked from commit 4561f64) (cherry picked from commit e31c551) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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GH-146348 is a backport of this pull request to the 3.13 branch. |
ambv
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Mar 23, 2026
…dded quad (GH-145267) (GH-146326) (GH-146348) Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc) no longer ignores excess data after the first padded quad in non-strict (default) mode. Instead, in conformance with RFC 4648, it ignores the pad character, "=", if it is present before the end of the encoded data. (cherry picked from commit 4561f64) (cherry picked from commit e31c551) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc) no longer ignores excess data after the first padded quad in non-strict (default) mode. Instead, in conformance with RFC 4648, it ignores the pad character, "=", if it is present before the end of the encoded data.
(cherry picked from commit 4561f64)