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Published: 18/12/2020 Updated: 21/12/2020

CVSS v2 Base Score: 4 | Impact Score: 2.9 | Exploitability Score: 8

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 356

Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N

An issue exists in tangro Business Workflow prior to 1.18.1. No (or broken) access control checks exist on the /api/document/<DocumentID>/attachments API endpoint. Knowing a document ID, an attacker can list all the attachments of a workitem, including their respective IDs. This allows the malicious user to gather valid attachment IDs for workitems that do not belong to them.

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tangro business workflow

CWE-922 https://www.tangro.de/https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/https://nvd.nist.gov

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CVE-2020-26176

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