magento2-40894: Admin category edit crash on PHP 8.5 when frontend_input is null
Community fix magento2-40894 merged into magento/magento2 on 2026-09-01, not in a release yet; applies cleanly to 34 releases from 2.4.6 to 2.4.9.
Fixes admin category edit crash on PHP 8.5 when frontend_input is null edited
- Pull request title
- Fix PHP 8.5 deprecation when category attribute has 'frontend_input' …
- Pull request
- magento/magento2#40894
- Issues
- #40908 pr-derived
- Author
- @hostep
- Merged
- 2026-09-01
- Fixed in
- no release yet
- Reported on
- —
- Categories
- Catalog/Product
- Components
- magento/module-catalog
Labels
- Area
- Framework
- Component
- Catalog
- Priority
- P1
- Severity
- —
- Reported on (labels)
- 2.4.x
Issue
Title and steps come from the upstream issue and pull request.
Description
Steps to reproduce
smile/elasticsuite with composer, use version 2.12.02. Run
bin/magento setup:upgrade3. In backoffice, try to open a category
4. Execute the added unit test using PHP 8.5, it should fail before the fix, and succeed after the fix
Taken from the upstream pull request.
Error signatures
- Exception (Exception): Deprecated Functionality: Using null as an array offset is deprecated, use an empty string instead in vendor/magento/module-catalog/Model/Category/DataProvider.php
Code match per tag
Each tag was checked with git apply --check against that tag's files. A clean match means the change applies; it is not a test result. Tags that already contain the fix are marked.
| Line | Code match per tag | Tests |
|---|---|---|
| 2.4.6 | 2.4.6 clean 2.4.6-p1 clean 2.4.6-p2 clean 2.4.6-p3 clean 2.4.6-p4 clean 2.4.6-p5 clean 2.4.6-p6 clean 2.4.6-p7 clean 2.4.6-p8 clean 2.4.6-p9 clean 2.4.6-p10 clean 2.4.6-p11 clean 2.4.6-p12 clean 2.4.6-p13 clean 2.4.6-p14 clean 2.4.6-p15 clean | 2.4.6: no test data 2.4.6-p1: no test data 2.4.6-p2: no test data 2.4.6-p3: no test data 2.4.6-p4: no test data 2.4.6-p5: no test data 2.4.6-p6: no test data 2.4.6-p7: no test data 2.4.6-p8: no test data 2.4.6-p9: no test data 2.4.6-p10: no test data 2.4.6-p11: no test data 2.4.6-p12: no test data 2.4.6-p13: no test data 2.4.6-p14: no test data 2.4.6-p15: no test data |
| 2.4.7 | 2.4.7 clean 2.4.7-p1 clean 2.4.7-p2 clean 2.4.7-p3 clean 2.4.7-p4 clean 2.4.7-p5 clean 2.4.7-p6 clean 2.4.7-p7 clean 2.4.7-p8 clean 2.4.7-p9 clean 2.4.7-p10 clean | 2.4.7: no test data 2.4.7-p1: no test data 2.4.7-p2: no test data 2.4.7-p3: no test data 2.4.7-p4: no test data 2.4.7-p5: no test data 2.4.7-p6: no test data 2.4.7-p7: no test data 2.4.7-p8: no test data 2.4.7-p9: no test data 2.4.7-p10: passes before and after (test does not cover the fix)unit: passes before and after |
| 2.4.8 | 2.4.8 clean 2.4.8-p1 clean 2.4.8-p2 clean 2.4.8-p3 clean 2.4.8-p4 clean 2.4.8-p5 clean | 2.4.8: no test data 2.4.8-p1: no test data 2.4.8-p2: no test data 2.4.8-p3: no test data 2.4.8-p4: no test data 2.4.8-p5: passes before and after (test does not cover the fix)unit: passes before and after |
| 2.4.9 | 2.4.9 clean | 2.4.9: passes before and after (test does not cover the fix)unit: passes before and after |
Triage
Model @cf/cloudflare/clef. Probability this is a bug fix: 94.7%. Probability it is security relevant: 0.7%.
Show the model's answers and probabilities
| Question | Answer | Probabilities | Confidence |
|---|---|---|---|
| Change kind | bugfix | bugfix 93.4%, refactor 2.1%, tests_only 1.7%, dependency 1.2%, feature 0.9%, docs_only 0.7% | 84.9% |
| Area | catalog | catalog 74.0%, admin 20.6%, framework 2.3% | 53.2% |
| Reported version | unspecified | unspecified 21.6%, 2.4.6 2.6%, 2.4.7 2.5% | 4.6% |
| Scope | 0.41 of 2 | 0 65.4%, 1 28.4%, 2 6.2% | 26.9% |
| Risk | 0.21 of 2 | 0 82.9%, 1 13.7%, 2 3.4% | 56.1% |
| Worth backporting | 1.24 of 2 | 2 45.7%, 1 32.6%, 0 21.7% | 4.3% |
Download
For cweagans/composer-patches, choose a version below and download the bundle. Copy its magento2-40894/ folder into patches/composer/, merge composer.patches.json into composer.json, then run composer install. Test files are always removed; paths are relative to each package root, using the default -p1 level.
Bundle README (what the ZIP ships)
# magento2-40894 Community fix merged upstream into magento/magento2, adapted by magento.watch. This is not a patch published by Adobe. Pull request: https://github.com/magento/magento2/pull/40894 Issue: https://github.com/magento/magento2/issues/40908 Author: @hostep Source commit: 993973f973b0ad7e435be8e0e91598646121f113 Modifications: test files and documentation removed, paths rewritten relative to each Composer package. Licence: OSL-3.0 / AFL-3.0, as the original Magento Open Source code. Maintainer: Łukasz Bajsarowicz (@lbajsarowicz)
Licence: Magento Open Source code under OSL-3.0 and AFL-3.0. The bundle carries the original author, source commit and the list of modifications.
