GeezerVison is showing github.com — [3.13] gh-145264: Do not ignore excess Base64 data after the first padded quad (GH-145267) (GH-146326) by miss-islington · Pull Request #146348 · python/cpython
Conversation
miss-islington
commented
Mar 23, 2026
•
edited by bedevere-app
Bot
Loading
Uh oh!
There was an error while loading. Please reload this page.
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 [email protected]
Sorry, something went wrong.
Uh oh!
There was an error while loading. Please reload this page.
…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 <[email protected]>
This was referenced Mar 23, 2026
Uh oh!
There was an error while loading. Please reload this page.
Uh oh!
There was an error while loading. Please reload this page.
Assignees
No one assigned
Milestone
No milestone
Development
Successfully merging this pull request may close these issues.
Uh oh!
There was an error while loading. Please reload this page.
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.