CVE-2021-3395 Cross-site scripting in n/a
Authenticated users can upload malicious files containing JavaScript that executes when viewed, allowing attackers to perform actions in the victim's browser.
- 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-2021-3395?
CVE-2021-3395 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Feb 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
A cross-site scripting (XSS) vulnerability in Pryaniki 6.44.3 allows remote authenticated users to upload an arbitrary file. The JavaScript code will execute when someone visits the attachment.
Weakness: CWE-79
Which versions are affected by CVE-2021-3395?
It affects 1 product.
Products include Pryaniki Pryaniki.
How do I fix CVE-2021-3395?
No fix has been published for CVE-2021-3395 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-2021-3395 being exploited?
There is no known exploitation of CVE-2021-3395 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-46ch-m2h6-h4rg.