Dolibarr 21.0.0 before 24.0.0 contains an authorization bypass vulnerability caused by an inverted boolean condition in the private-project membership check within the clonetasks mass action handler in htdocs/core/actions_massactions.inc.php. Authenticated users with project creation permission but without access to a target private project can exploit the flawed !in_array() check to clone tasks into unauthorized private projects.
https://www.vulncheck.com/advisories/dolibarr-authorization-bypass-via-clonetasks-mass-action
https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
https://github.com/Dolibarr/dolibarr/commit/1730aa56675b31cfede895fdae55b673d887fb8f
Published: 2026-08-24
Updated: 2026-08-24
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00208