Auth bypass in Dolibarr
CVE-2026-77923
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
Weakness classification (CWE)
References
- Dolibarr 24.0.0 Release Notes (release-notes, Product, Release Notes)
- Patch Commit (Patch, patch)
- www.vulncheck.com/advisories/dolibarr-authorization-bypass-via-clonetasks-mass-… (Patch, Third Party Advisory, Release Notes, third-party-advisory)
Frequently asked questions
- What is CVE-2026-77923?
- CVE-2026-77923 is a medium-severity vulnerability in Dolibarr, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-08-24.
- How severe is CVE-2026-77923?
- Medium severity. CVSS v3 base score is 4.3 out of 10.