This release includes 3 security fixes for security teams reviewing exposed deployments.
Topics
+13 more
Affected surfaces
Summary
AI summaryHarden unserializer and add permission checks for view access in Word Export TranslationController.
Changes in this release
| Type | Severity | Summary | CVE |
|---|---|---|---|
| Security | Medium |
Improve Composite Index in ClassDefinition security vulnerability fixed Improve Composite Index in ClassDefinition security vulnerability fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: low |
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| Security | Medium |
Add permission check for view access in Word Export TranslationController security vulnerability fixed Add permission check for view access in Word Export TranslationController security vulnerability fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: low |
— |
| Security | Medium |
Harden unserializer and refine allowed classes security vulnerability fixed Harden unserializer and refine allowed classes security vulnerability fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: low |
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| Security | Medium |
Enhance Authorization in WebDAV MOVE via unchecked asset move handling security vulnerability fixed Enhance Authorization in WebDAV MOVE via unchecked asset move handling security vulnerability fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: low |
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| Feature | Medium |
Prefer storage-reported MIME type after asset write (fallback to stream sniffing) Prefer storage-reported MIME type after asset write (fallback to stream sniffing) Source: granite4.1:8b-q6_K@2026-05-19 Confidence: low |
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| Bugfix | Medium |
Decouple InstallerKernel from MicroKernelTrait private API bug fixed Decouple InstallerKernel from MicroKernelTrait private API bug fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high |
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| Bugfix | Medium |
Improve memory usage in asset custom settings migration bug fixed Improve memory usage in asset custom settings migration bug fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high |
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| Bugfix | Medium |
Error message "Cannot traverse an already closed generator" when moving folder with assets fixed Error message "Cannot traverse an already closed generator" when moving folder with assets fixed Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high |
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Full changelog
What's Changed
- Rename update guide from V12 to V13 to V12 to V2026 by @jdreesen in https://github.com/pimcore/pimcore/pull/19105
- Fix Pimcore version in upgrade docs by @jdreesen in https://github.com/pimcore/pimcore/pull/19101
- [Security]: Improve Composite Index in ClassDefnition by @kingjia90 in https://github.com/pimcore/pimcore/pull/19108
- [Security]: Add permission check for view access in Word Export TranslationController by @kingjia90 in https://github.com/pimcore/pimcore/pull/19112
- [Bug, InstallBundle] Decouple InstallerKernel from MicroKernelTrait private API by @mcop1 in https://github.com/pimcore/pimcore/pull/19113
- [Security]: Harden unserializer and refine allowed classes by @kingjia90 in https://github.com/pimcore/pimcore/pull/19119
- [Security]Enhance Authorization in WebDAV MOVE via unchecked asset move handling by @kingjia90 in https://github.com/pimcore/pimcore/pull/19120
- Prefer storage-reported MIME type after asset write (fallback to stream sniffing) by @vrobert78 in https://github.com/pimcore/pimcore/pull/18900
- [Bug, EC] PEES-942: Improve memory usage in asset custom settings migration by @kingjia90 in https://github.com/pimcore/pimcore/pull/19127
- [Bug] Error message "Cannot traverse an already closed generator" pops up when moving folder with assets by @MartaMarija in https://github.com/pimcore/pimcore/pull/18968
Full Changelog: https://github.com/pimcore/pimcore/compare/v12.3.6...v12.3.7
Security Fixes
- CVE‑2026‑XXXXX – Harden unserializer and refine allowed classes
- CVE‑2026‑XXXXX – Add permission check for view access in Word Export TranslationController
- CVE‑2026‑XXXXX – Enhance Authorization in WebDAV MOVE via unchecked asset move handling
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