CVE-2026-86731 Craft CMS 5.0.0-RC1 before 5.10.12 Permission Escalation via UsersController

Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser the users/activate-user action. While the action requires the administrateUsers permission, it does not call requireAdmin when the targeted user is an administrator, unlike the...

EUVD-2026-72867

Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser the users/activate-user action. While the action requires the administrateUsers permission, it does not call requireAdmin when the targeted user is an administrator, unlike the...

CVE-2026-86731 Craft CMS 5.0.0-RC1 before 5.10.12 Permission Escalation via UsersController

Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser the users/activate-user action. While the action requires the administrateUsers permission, it does not call requireAdmin when the targeted user is an administrator, unlike the...

CVE-2026-86731 Craft CMS 5.0.0-RC1 before 5.10.12 Permission Escalation via UsersController

Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser the users/activate-user action. While the action requires the administrateUsers permission, it does not call requireAdmin when the targeted user is an administrator, unlike the...

CVE-2026-86731

Craft CMS versions 5.0.0-RC1 through 5.10.11 contain a permission escalation flaw in UsersController::actionActivateUser (the users/activate-user action). The action requires the administrateUsers permission but fails to call requireAdmin() when the targeted user is an administrator, unlike the s...

CVE-2026-86730 Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

CVE-2026-86730 Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

CVE-2026-86730 Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

CVE-2026-86730

Craft CMS versions from 5.0.0-RC1 before 5.10.12 are vulnerable to Remote Code Execution (RCE) due to improper cleansing of string-typed field-layout elements. An authenticated control-panel user can post field-layout tab elements as JSON strings to bypass cleanse validation, injecting Yii2 behav...

EUVD-2026-72866

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

PT-2026-87129

Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes through the criteria parameter. Attackers can inject a malicious class via criteriawithTransforms0class that...

PT-2026-87128

Name of the Vulnerable Software and Affected Versions Craft CMS versions 5.0.0-RC1 through 5.10.11 Description An authenticated control panel user with the administrateUsers permission can activate a pending or deactivated administrator account. This occurs because the...

CVE-2026-86731: Missing Authorization

Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser the users/activate-user action. While the action requires the administrateUsers permission, it does not call requireAdmin when the targeted user is an administrator, unlike the...

CVE-2026-86732: Improper Control of Generation of Code

Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint that allows authenticated content editors to instantiate arbitrary classes through the criteria parameter. Attackers can inject a malicious class via criteriawithTransforms0class that...

PT-2026-87127

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

CVE-2026-86730: Improper Control of Generation of Code

Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger...

EUVD-2026-72017

libpcap BPF interpreter calls abort if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process...

CVE-2026-79990

Craft CMS GraphQL entry mutation resolvers saveEntry, deleteEntry read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments, which is the function that enforces site-scope filtering via arrayintersect against the GraphQL schema’s allowed sites. The query path...

CVE-2026-79991

Craft CMS GraphQL entry mutation resolvers saveEntry, deleteEntry read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments, which is the function that enforces site-scope filtering via arrayintersect against the GraphQL schema’s allowed sites. The query path...

CVE-2026-79991 Authenticated SQL Injection via nested eager-loading criteria

Craft CMS GraphQL entry mutation resolvers saveEntry, deleteEntry read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments, which is the function that enforces site-scope filtering via arrayintersect against the GraphQL schema’s allowed sites. The query path...