GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — [3.10] gh-155292: Don't consider Unicode codepoint attributes outside RFC 3454 (GH-155293) (GH-156020) by encukou · Pull Request #156932 · python/cpython

Conversation

@encukou

@encukou encukou commented Sep 4, 2026 •
edited by bedevere-app Bot
Loading

Uh oh!

There was an error while loading. Please reload this page.

Copy link
Copy Markdown
Member

Due to a bug, some Unicode codepoint attributes were considered
for characters not yet defined in Unicode 3.2.0 or attributes
which changed in later Unicode versions. RFC 3454 (StringPrep)
requires using Unicode 3.2.0 strictly.

(cherry picked from commit 7e109d0)
The cherry-pick needed reworking as GH-144815 wasn't backported to 3.14
and below, so unassigned characters don't have bidi values.
(cherry picked from commit 1e54caa)
Also, add Unicode_3_2_0_FunctionsTest as in the later versions,
to make the new test work.

Co-authored-by: Seth Larson [email protected]
Co-authored-by: Stan Ulbrych [email protected]
Co-authored-by: Petr Viktorin [email protected]

  • Issue: stringprep and IDNA 2003 incorrectly handles some characters #155292

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.
All reactions
encukou and others added 3 commits September 4, 2026 13:47
@encukou @sethmlarson @StanFromIreland
[3.10] pythongh-155292: Don't consider Unicode codepoint attributes o…
cb9f269 
…utside RFC 3454 (pythonGH-155293) (pythonGH-156020)

Due to a bug, some Unicode codepoint attributes were considered
for characters not yet defined in Unicode 3.2.0 or attributes
which changed in later Unicode versions. RFC 3454 (StringPrep)
requires using Unicode 3.2.0 strictly.

(cherry picked from commit 7e109d0)
The cherry-pick needed reworking as pythonGH-144815 wasn't backported to 3.14
and below, so unassigned characters don't have bidi values.
(cherry picked from commit 1e54caa)

Co-authored-by: Petr Viktorin <[email protected]>
Co-authored-by: Seth Larson <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
Co-authored-by: Petr Viktorin <[email protected]>
@encukou
Add Unicode_3_2_0_FunctionsTest
fc281f9
@encukou
Regenerate Unicode data
0559f08
@bedevere-app bedevere-app Bot mentioned this pull request Sep 4, 2026
stringprep and IDNA 2003 incorrectly handles some characters #155292
Closed
@bedevere-app bedevere-app Bot added awaiting core review topic-unicode type-security A security issue labels Sep 4, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Sep 4, 2026
[3.14] gh-155292: Don't consider Unicode codepoint attributes outside RFC 3454 (GH-155293) #156020
Merged
@pablogsal
pablogsal merged commit d397a49 into python:3.10 Oct 1, 2026
15 checks passed

Uh oh!

There was an error while loading. Please reload this page.
@bedevere-app bedevere-app Bot removed the awaiting core review label Oct 1, 2026
icanhasmath pushed a commit to ActiveState/cpython that referenced this pull request Oct 28, 2026
@encukou @sethmlarson
@StanFromIreland @icanhasmath
[3.10] pythongh-155292: Don't consider Unicode codepoint attributes o…
eb1b45f 
…utside RFC 3454 (pythonGH-155293) (pythonGH-156020) (python#156932)

* [3.10] pythongh-155292: Don't consider Unicode codepoint attributes outside RFC 3454 (pythonGH-155293) (pythonGH-156020)

Due to a bug, some Unicode codepoint attributes were considered
for characters not yet defined in Unicode 3.2.0 or attributes
which changed in later Unicode versions. RFC 3454 (StringPrep)
requires using Unicode 3.2.0 strictly.

(cherry picked from commit 7e109d0)
The cherry-pick needed reworking as pythonGH-144815 wasn't backported to 3.14
and below, so unassigned characters don't have bidi values.
(cherry picked from commit 1e54caa)

Co-authored-by: Petr Viktorin <[email protected]>
Co-authored-by: Seth Larson <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
Co-authored-by: Petr Viktorin <[email protected]>

* Add Unicode_3_2_0_FunctionsTest

* Regenerate Unicode data

---------

Co-authored-by: Seth Larson <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
(cherry picked from commit d397a49)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Uh oh!

There was an error while loading. Please reload this page.

Assignees

No one assigned

Labels

topic-unicode type-security A security issue

Projects

None yet

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.

2 participants

@encukou @pablogsal
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.
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.