CVE-2026-18426 Concrete CMS 9.0.0 to 9.5.2 Express Form block missing authorization allows an authenticated editor to modify Express Forms they cannot edit

Concrete CMS 9.0.0 through 9.5.2 did not enforce a block-level edit-permission check on the Express Form block's control-management actions, which relied solely on CSRF token validation. Because the token is bound to the user and action rather than to a specific block, page, or form, an...

EUVD-2026-78205

Concrete CMS before 9.5.3 applied only trim to the YouTube block's stored width and height values and printed them into iframe HTML attributes without escaping or integer casting, resulting in stored cross-site scripting. A user with editblock permission could inject an event handler that execute...

CVE-2012-1578

Multiple cross-site request forgery CSRF vulnerabilities in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allow remote attackers to hijack the authentication of users with the block permission for requests that 1 block a user via a request to the Block module or 2 unblock a user via a...

CVE-2012-1578

CVE-2012-1578 affects MediaWiki 1.17.x (before 1.17.3) and 1.18.x (before 1.18.2). The root cause is multiple CSRF vulnerabilities that allow remote attackers to hijack authentication of users with block permission for requests to Block (block a user) or Unblock (unblock a user). Impact is hijack...

CVE-2012-1578

Multiple cross-site request forgery CSRF vulnerabilities in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allow remote attackers to hijack the authentication of users with the block permission for requests that 1 block a user via a request to the Block module or 2 unblock a user via a...

CVE-2012-1578

Multiple cross-site request forgery CSRF vulnerabilities in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allow remote attackers to hijack the authentication of users with the block permission for requests that 1 block a user via a request to the Block module or 2 unblock a user via a...