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Dolibarr ERP EUVDEUVD-2026-65078

| CVE-2026-71505 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-08-24 VulnCheck GHSA-c275-q2j8-wwg9
7.1
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.1 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.5 HIGH

Scope changed because the attacker hijacks a distinct security principal (victim company's WebPortal session); PR:L reflects mandatory low-privilege authentication; no availability impact exists.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Source Code Evidence Fetched
Aug 24, 2026 - 19:38 vuln.today
Analysis Generated
Aug 24, 2026 - 19:38 vuln.today
CVE Published
Aug 24, 2026 - 19:00 cve.org
HIGH 7.1

DescriptionCVE.org

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.

AnalysisAI

Broken object-level authorization (BOLA) in Dolibarr's REST API write routes for third-party site accounts allows any authenticated user holding third-party creation rights to overwrite the WebPortal password of any company in the system, regardless of ownership. After replacing the password, the attacker can log into the victim company's WebPortal and access its invoice data; the write endpoint also returns the victim's previous password verifier, enabling potential offline credential attacks. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The attacker must hold a valid Dolibarr account with 'third-party creation rights' - a specific permission level below full administrator that may be assigned to partner users, resellers, or lower-privilege internal staff. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 7.1 (AV:N/AC:L/AT:N/PR:L/UI:N) accurately captures the threat profile: network-accessible, low complexity, no special attack prerequisites, but gated behind a valid low-privilege account. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Dolibarr to version 24.0.0 or later immediately; the fix is confirmed at commit 4cf305ebb958eeffa921aad7c94de179b764f7e7 (https://github.com/Dolibarr/dolibarr/commit/4cf305ebb958eeffa921aad7c94de179b764f7e7) and the release is available at https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all Dolibarr instances in use and determine current versions to establish exposure scope. …

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EUVD-2026-65078 vulnerability details – vuln.today

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