CVE-2021-3916 Path Traversal in bookstackapp/bookstack
An attacker can exploit a path traversal vulnerability in BookStack to read arbitrary files from the server.
- 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-2021-3916?
CVE-2021-3916 is a medium-severity path traversal vulnerability in bookstackapp/bookstack, published on 5 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Weakness: CWE-22
Which versions are affected by CVE-2021-3916?
It affects 1 product.
Products include Bookstackapp Bookstack.
How do I fix CVE-2021-3916?
No fix has been published for CVE-2021-3916 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-3916 being exploited?
There is no known exploitation of CVE-2021-3916 in the wild and no public exploit code.
Other vulnerabilities in bookstackapp/bookstack
- CVE-2020-5256 Remote Code Execution Through Image Uploads in BookStack
- CVE-2020-26210 Cross-Site Scripting in BookStack
- CVE-2020-26211 Cross-Site Scripting in BookStack
- CVE-2022-0877 Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack
- CVE-2021-3915 Unrestricted Upload of File with Dangerous Type in bookstackapp/bookstack
Sources
Also known as GHSA-g66g-3vwf-hfgf.