Broken captcha for registration and password reset in 5.9+

[kt315ua]

Describe the issue

On 5.7.2.2 registration and password reset working well. 5.8.4 also seems fine.
On 5.9.1 i can't register new account via superuser administration page, because new user can't pass registration by invitation link.
The same problem with password reset.

Our temporary solution: downgrade to 5.8.4
Server configuration described here: #13325
Possible relevant issue: #13322

I already tried

• I've read and searched the documentation.
• I've searched for similar filed issues in this repository.

Steps to reproduce the behavior

1. register new account via superuser administration page
2. try pass registration via received invitation link

Log error:

gunicorn stderr | [2024-12-18 15:58:43,040: ERROR/453] Invalid altcha solution: (None,)

Expected behavior

New user successfully registered

Screenshots

Exception traceback

No response

How do you run Weblate?

Docker container

Weblate versions

5.9.1 - issue exist
5.8.4, 5.7.2.2 - no issue

Weblate deploy checks

No response

Additional context

No response

[nijel]

Do you see any errors in the browser console?

[kt315ua]

@nijel
I don't see issues in the browser console (adblock, duck-duck-go are disabled)

[nijel]

Okay, there is a bug in our code that rejects any captcha after initial one fails. This one is fixed in #13338.

There also seems to be something wrong in altcha itself what makes solutions randomly not pass, I've reported that at altcha-org/altcha-lib-py#10.

[github-actions]

Thank you for your report; the issue you have reported has just been fixed.

• In case you see a problem with the fix, please comment on this issue.
• In case you see a similar problem, please open a separate issue.
• If you are happy with the outcome, don’t hesitate to support Weblate by making a donation.

[github-actions]

Thank you for your report; the issue you have reported has just been fixed.

• In case you see a problem with the fix, please comment on this issue.
• In case you see a similar problem, please open a separate issue.
• If you are happy with the outcome, don’t hesitate to support Weblate by making a donation.