CVE-2021-36747 Cross-site scripting in n/a

Medium 5.4 Published 20 Jul 2021 Updated 4 Aug 2024

An authenticated user can inject malicious scripts via the Feedback to Learner form in Blackboard Learn, potentially leading to session hijacking or code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-36747?

CVE-2021-36747 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.

Weakness: CWE-79

Which versions are affected by CVE-2021-36747?

It affects 1 product.

Products include Blackboard Blackboard Learn.

How do I fix CVE-2021-36747?

No fix has been published for CVE-2021-36747 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-36747 being exploited?

There is no known exploitation of CVE-2021-36747 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-42mm-xxc6-g629.