CVE-2026-55794 Craft CMS: Potential authenticated Remote Code Execution via referrer redirect

Craft CMS is a content management system CMS. In versions 5.9.0 and above prior to 5.10.0, control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header, potentially leading to authenticated RCE. The issue happens when a user is saving entries...

CVE-2026-55792

Craft CMS is vulnerable in versions 4.0.0-RC1 through 4.17.x and 5.0.0-RC1 through 5.9.x due to dataUrl() being in the Twig sandbox allowlist. A control panel user with the utility:system-messages permission can embed a file-reading payload in system emails, causing the server to read targeted fi...

CVE-2026-55792 Craft CMS: Sensitive File Disclosure / Server-Side File Read

Craft CMS is a content management system CMS. In versions starting from 4.0.0-RC1 and prior to 4.18.0, and 5.0.0-RC1 and above, prior to 5.10.0, the dataUrl Twig function is included in Craft’s Twig sandbox allowlist, allowing any control panel user granted the utility:system-messages permission ...

CVE-2026-55792

Craft CMS is a content management system CMS. In versions starting from 4.0.0-RC1 and prior to 4.18.0, and 5.0.0-RC1 and above, prior to 5.10.0, the dataUrl Twig function is included in Craft’s Twig sandbox allowlist, allowing any control panel user granted the utility:system-messages permission ...

CVE-2026-50283

Craft CMS is a content management system CMS. Versions 5.0.0-RC1 through 5.9.20, and 4.0.0-RC1 through 4.17.13 contain an authorization issue in the AssetsController::actionReplaceFile that can delete a source asset without source delete permission by supplying both assetId and sourceAssetId...

CVE-2026-50284

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.21 and 4.0.0-RC1 through 4.17.14, theAssetsController::actionDeleteFolder only requires the deleteAssets: permission for the target folder. It never enforces deletePeerAssets:, even though Assets::deleteFoldersByIds...

CVE-2026-55791 Craft CMS: Blind SSRF and Arbitrary JavaScript Injection via Host Header Poisoning in actionResourceJs

Craft CMS is a content management system CMS. Versions 4.0.0-RC1 and above, prior to 4.18.0 and 5.0.0-RC1, and above, prior to 5.10.0, are vulnerable to Server-Side Request Forgery SSRF and Arbitrary JavaScript Injection through the /actions/app/resource-js endpoint. By exploiting the default...

CVE-2026-55791

Craft CMS vulnerability CVE-2026-55791 enables SSRF and Arbitrary JavaScript Injection via /actions/app/resource-js when assetManager.cacheSourcePaths is false and trustedHosts is permissive. An attacker can poison Host/X-Forwarded-Host to hijack $baseUrl, causing Craft::createGuzzleClient()->...

CVE-2026-55791 Craft CMS: Blind SSRF and Arbitrary JavaScript Injection via Host Header Poisoning in actionResourceJs

Craft CMS is a content management system CMS. Versions 4.0.0-RC1 and above, prior to 4.18.0 and 5.0.0-RC1, and above, prior to 5.10.0, are vulnerable to Server-Side Request Forgery SSRF and Arbitrary JavaScript Injection through the /actions/app/resource-js endpoint. By exploiting the default...

CVE-2026-55790 Craft CMS: DOM XSS via GitHub issue title in CraftSupport widget

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.22 and 4.0.0-RC1 through 4.17.15, an attacker with only a GitHub account can plant a JavaScript payload in a craftcms/cms issue title. When a Craft admin uses the CraftSupport widget’s "Give feedback" screen and types...

CVE-2026-55790

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.22 and 4.0.0-RC1 through 4.17.15, an attacker with only a GitHub account can plant a JavaScript payload in a craftcms/cms issue title. When a Craft admin uses the CraftSupport widget’s "Give feedback" screen and types...

CVE-2026-50284

Craft CMS (versions 5.0.0-RC1–5.9.21 and 4.0.0-RC1–4.17.14) has a privilege check flaw in AssetsController::actionDeleteFolder: it only enforces deleteAssets: for the target folder and does not enforce deletePeerAssets:, allowing a low-privilege user with folder-management rights on a shared volu...

CVE-2026-50284 Craft CMS: Missing peer-permission check in `AssetsController::actionDeleteFolder` allows deletion of other users' assets

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.21 and 4.0.0-RC1 through 4.17.14, theAssetsController::actionDeleteFolder only requires the deleteAssets: permission for the target folder. It never enforces deletePeerAssets:, even though Assets::deleteFoldersByIds...

CVE-2026-50284 Craft CMS: Missing peer-permission check in `AssetsController::actionDeleteFolder` allows deletion of other users' assets

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.21 and 4.0.0-RC1 through 4.17.14, theAssetsController::actionDeleteFolder only requires the deleteAssets: permission for the target folder. It never enforces deletePeerAssets:, even though Assets::deleteFoldersByIds...

CVE-2026-50284

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.21 and 4.0.0-RC1 through 4.17.14, theAssetsController::actionDeleteFolder only requires the deleteAssets: permission for the target folder. It never enforces deletePeerAssets:, even though Assets::deleteFoldersByIds...

CVE-2026-50283

Craft CMS is a content management system CMS. Versions 5.0.0-RC1 through 5.9.20, and 4.0.0-RC1 through 4.17.13 contain an authorization issue in the AssetsController::actionReplaceFile that can delete a source asset without source delete permission by supplying both assetId and sourceAssetId...

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

Craft CMS is a content management system CMS. Versions 5.0.0-RC1 through 5.9.20, and 4.0.0-RC1 through 4.17.13 contain an authorization issue in the AssetsController::actionReplaceFile that can delete a source asset without source delete permission by supplying both assetId and sourceAssetId...

CVE-2026-50283

Craft CMS versions 5.0.0-RC1–5.9.20 and 4.0.0-RC1–4.17.13 contain an authorization issue in AssetsController::actionReplaceFile that can delete a source asset without source delete permission when both assetId and sourceAssetId are supplied. The runtime loads assetId ($assetToReplace) and sourceA...

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

Craft CMS is a content management system CMS. Versions 5.0.0-RC1 through 5.9.20, and 4.0.0-RC1 through 4.17.13 contain an authorization issue in the AssetsController::actionReplaceFile that can delete a source asset without source delete permission by supplying both assetId and sourceAssetId...

CVE-2026-55793 Craft CMS: Stored XSS via Structure entry title in table view

Craft CMS is a content management system CMS. In versions 5.0.0-RC1 through 5.9.22, an author-level control panel user can store a malicious JavaScript payload in an entry title. When an admin, or any control panel user with saveEntries for the same Structure section, drags another entry under th...