CVE-2026-50283: Craft CMS: Unauthorized Deletion of Source Assets During File Replacement

July 2, 2026

We have identified an authorization issue in Craft CMS AssetsController::actionReplaceFile that can delete a source asset without source delete permission by supplying both assetId and sourceAssetId.

References

github.com/advisories/GHSA-qh45-9g5p-m2v4
github.com/craftcms/cms/commit/2c2579c7f1030872423f268d0c8b48377101961d
github.com/craftcms/cms/security/advisories/GHSA-qh45-9g5p-m2v4
nvd.nist.gov/vuln/detail/CVE-2026-50283

Code Behaviors & Features

Detect and mitigate CVE-2026-50283 with GitLab Dependency Scanning

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