7.1
HIGH CVSS 4.0
CVE-2026-71509
Dolibarr < 24.0.0 Expense Report REST API Improper Authorization via Update Endpoint
Description

Dolibarr before 24.0.0 contains an improper authorization vulnerability in the expense report REST API update endpoint that allows authenticated attackers with expense-creation rights to bypass the approval workflow by directly setting approval status and approver identity fields. Attackers can manipulate workflow state fields through the REST API to advance expense reports to approved or closed status without possessing the dedicated approval right, while also creating forensic inconsistencies in audit records due to missing approval timestamps.

INFO

Published Date :

Aug. 24, 2026, 7:16 p.m.

Last Modified :

Aug. 24, 2026, 7:16 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2026-71509 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM 83251b91-4cc7-4094-a5c7-464a1b83ea10
CVSS 3.1 MEDIUM [email protected]
CVSS 4.0 HIGH 83251b91-4cc7-4094-a5c7-464a1b83ea10
CVSS 4.0 HIGH [email protected]
Solution
Update Dolibarr to version 24.0.0 or later to fix authorization bypass in expense report API.
  • Update Dolibarr to version 24.0.0 or later.
  • Review access controls for expense report API endpoints.
  • Ensure proper approval workflow is enforced after update.
  • Verify audit logs for consistency.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-71509 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-71509 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-71509 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-71509 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Aug. 24, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://github.com/Dolibarr/dolibarr', 'vendor': 'Dolibarr', 'product': 'dolibarr', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '24.0.0', 'versionType': 'semver'}], 'packageURL': 'pkg:github/Dolibarr/dolibarr', 'defaultStatus': 'affected'}]
    Added Description Dolibarr before 24.0.0 contains an improper authorization vulnerability in the expense report REST API update endpoint that allows authenticated attackers with expense-creation rights to bypass the approval workflow by directly setting approval status and approver identity fields. Attackers can manipulate workflow state fields through the REST API to advance expense reports to approved or closed status without possessing the dedicated approval right, while also creating forensic inconsistencies in audit records due to missing approval timestamps.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    Added CWE CWE-862
    Added Reference https://codeant.ai/security-research/cve-2026-71509-dolibarr-mass-assignment-lets-users-self-approve-expenses
    Added Reference https://github.com/Dolibarr/dolibarr/commit/9c4eb945321f823955879600e9dc58a44d249e44
    Added Reference https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
    Added Reference https://www.vulncheck.com/advisories/dolibarr-expense-report-rest-api-improper-authorization-via-update-endpoint
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.