CVE-2023-33961 Leantime Stored Cross-site Scripting Vulnerability
An authenticated user can inject malicious JavaScript into comments, leading to code execution in other users' browsers.
- 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-2023-33961?
CVE-2023-33961 is a high-severity cross-site scripting vulnerability in leantime, published on 30 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Leantime is a lean open source project management system. Starting in version 2.3.21, an authenticated user with commenting privileges can inject malicious Javascript into a comment. Once the malicious comment is loaded in the browser by a user, the malicious Javascript code executes. As of time of publication, a patch does not exist.
Weakness: CWE-79
Which versions are affected by CVE-2023-33961?
It affects 1 product.
Products include Leantime Leantime.
How do I fix CVE-2023-33961?
No fix has been published for CVE-2023-33961 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-2023-33961 being exploited?
There is no known exploitation of CVE-2023-33961 in the wild and no public exploit code.
Other vulnerabilities in leantime
Sources
Also known as GHSA-359m-fp6q-65r7.