CVE-2026-50279

Craft CMS (versions 5.0.0-RC1 through 5.9.20) contains an authorization gap in EntriesController::actionSaveEntry where entry-edit checks precede author changes. The code path allows attacker-supplied authors to mutate the authors list when the current user is among the old authors, without re-ru...

CVE-2026-50279 Craft CMS: Authorship spoofing in `entries/save-entry` via pre-check/post-mutation authorization gap

Craft CMS is a content management system CMS. IN versions 5.0.0-RC1 and above prior to 5.9.21, theEntriesController::actionSaveEntry performs entry-edit permission checks before request-controlled author changes are applied to the model, allowing for authorship spoofing. The subsequent author...