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Dolibarr ERP EUVDEUVD-2026-64677

| CVE-2026-78160 LOW
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-08-24 VulDB GHSA-rh42-frc6-75f3
PHP Authentication Bypass Erp
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
5.4 MEDIUM

Network-reachable IDOR requiring authenticated session (PR:L); limited to notes read/write (C:L/I:L); no availability impact; scope unchanged.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Severity Changed
Aug 24, 2026 - 01:22 NVD
MEDIUM LOW
CVSS changed
Aug 24, 2026 - 01:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
Source Code Evidence Fetched
Aug 24, 2026 - 01:01 vuln.today
Analysis Generated
Aug 24, 2026 - 01:01 vuln.today

DescriptionCVE.org

A vulnerability has been found in Dolibarr ERP up to 18.0.10/22.0.5/23.0.3. This issue affects some unknown processing of the file /user/note.php of the component User Notes Handler. The manipulation of the argument ID leads to authorization bypass. The attack can be initiated remotely. Upgrading to version 23.0.4 and 24.0.0 is capable of addressing this issue. The identifier of the patch is 9b5229ef3a9b58d00252d327936b022fb739f149. Upgrading the affected component is advised.

AnalysisAI

Authorization bypass in Dolibarr ERP up to versions 18.0.10, 22.0.5, and 23.0.3 allows any low-privileged authenticated user to read or overwrite another user's private notes by manipulating the numeric id parameter in /user/note.php. The root cause (CWE-639 - Authorization Bypass Through User-Controlled Key) is a missing identity check before the permission evaluation: all requests were evaluated under the caller's self-write right rather than distinguishing whether the target user matched the caller. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to Dolibarr with any standard user account
Delivery
Identify target user's numeric ID via Dolibarr UI or enumeration
Exploit
Send HTTP request to /user/note.php with manipulated id parameter
Execution
Bypass self-only permission gate due to missing identity check
Impact
Read or overwrite victim user's private notes
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated Dolibarr session with at minimum the `user.self.write` right, which is granted to standard user accounts. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N, scoring 5.3) confirms this is remotely exploitable at low complexity by any authenticated user with no required interaction, representing a straightforward path for insider threat or compromised low-privilege accounts. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated Dolibarr user with a standard low-privilege account sends an HTTP GET or POST request to /user/note.php with the `id` parameter set to a target colleague's numeric user ID instead of their own. Because the pre-patch code evaluates only the self-write right without verifying identity, the request succeeds and returns or modifies the targeted user's private ERP notes. …
Remediation Upgrade Dolibarr ERP to version 23.0.4 or 24.0.0, both of which incorporate the fix from commit 9b5229ef3a9b58d00252d327936b022fb739f149 (https://github.com/Dolibarr/dolibarr/commit/9b5229ef3a9b58d00252d327936b022fb739f149), merged via pull request https://github.com/Dolibarr/dolibarr/pull/39123 and tagged at https://github.com/Dolibarr/dolibarr/releases/tag/23.0.4. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-64677 vulnerability details – vuln.today
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