CVE-2020-26171 Missing authorization in n/a

Medium 4.3 Published 18 Dec 2020 Updated 4 Aug 2024

Attackers can manipulate document IDs to add attachments to workitems belonging to other users, compromising data integrity.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-26171?

CVE-2020-26171 is a medium-severity missing authorization vulnerability in n/a, published on 18 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.

Weakness: CWE-639

Which versions are affected by CVE-2020-26171?

It affects 1 product.

Products include Tangro Business Workflow.

How do I fix CVE-2020-26171?

No fix has been published for CVE-2020-26171 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-26171 being exploited?

There is no known exploitation of CVE-2020-26171 in the wild and no public exploit code.

Sources

Also known as GHSA-xv6f-5jw7-pmw8.