Auth bypass in Dolibarr
CVE-2026-71505
Dolibarr before 24.0.0 contains a broken object-level authorization vulnerability in the REST API third-party site account write routes that allows authenticated attackers with third-party creation rights to overwrite the WebPortal password of any company by bypassing per-object access checks that are only enforced on read routes. Attackers can replace the victim company's WebPortal password through the write endpoint, authenticate as that company to access its invoice data, and also obtain the victim's previous password verifier from the API response.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.2% 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
- CodeAnt AI Blog (technical-description, exploit)
- Patch Commit (patch)
- Dolibarr 24.0.0 Release Notes (release-notes)
- www.vulncheck.com/advisories/dolibarr-rest-api-broken-object-level-authorizatio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71505?
- CVE-2026-71505 is a high-severity vulnerability in Dolibarr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-08-24.
- How severe is CVE-2026-71505?
- High severity. CVSS v3 base score is 7.1 out of 10.