CVE-2026-77928

ClipBucket v5 before 5.5.3-#182 contains a blind SQL injection vulnerability that allows authenticated users to extract arbitrary database contents by submitting the msg_id parameter as an array to bypass the clean_requests() sanitization function in ClipBucket.class.php. Attackers can pass unsanitized array elements through the deletion handler in private_message.php into cb_pm::delete_msg(), which interpolates the unescaped message ID directly into a SQL query string, enabling time-based blind SQL injection to retrieve all user credential hashes and email addresses.

• https://github.com/MacWarrior/clipbucket-v5/commit/85907c5fd1205ccae98c214bed4b3421c632f90c
• https://github.com/MacWarrior/clipbucket-v5/releases/tag/5.5.3-%23182
• https://www.vulncheck.com/advisories/clipbucket-blind-sql-injection-via-private-message-deletion-endpoint