CVE-2026-71251

Received Received - Intake

Unauthorized File Download in Akaunting Portal

Publication date: 2026-08-05

Last updated on: 2026-08-10

Assigner: TuranSec

Description

Akaunting's shared download route (app/Http/Controllers/Common/Uploads.php::download, reachable at uploads/{id}/download behind only generic auth middleware) fetched the requested Media record by ID with no verification that it belonged to the requesting portal customer's own company, allowing any authenticated portal customer to download any other company's uploaded files by guessing or enumerating media IDs.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-05

Last Modified

2026-08-10

Generated

2026-08-26

AI Q&A

2026-08-05

EPSS Evaluated

2026-08-25

NVD

CVE-2026-71251

EUVD

EUVD-2026-53324

Affected Vendors & Products

Vendor	Product	Version / Range
akaunting	akaunting	to 2026-07-12 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-639	The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

Executive Summary

This vulnerability in Akaunting allows any authenticated portal customer to download files belonging to other companies by guessing or enumerating media IDs. The issue was in the download route which did not verify file ownership before granting access.

Detection Guidance

To detect this vulnerability, check if the Akaunting application is running an outdated version without the fix in commit 80ef6d3. Review access logs for suspicious download attempts via the uploads/{id}/download route. Test by attempting to access files with arbitrary media IDs while authenticated as different users.

Impact Analysis

An attacker could access sensitive files from other companies, leading to data breaches, loss of confidential information, or compliance violations. The impact includes unauthorized data exposure and potential reputational damage.

Compliance Impact

This vulnerability could violate GDPR by exposing personal data without consent and HIPAA by leaking protected health information. It undermines data protection requirements for confidentiality and access controls.

Mitigation Strategies

Update Akaunting to the latest version after commit 80ef6d3 (2026-07-12) to apply the ownership check fix. Review file access logs for suspicious download attempts by authenticated users.

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