CVE-2021-3906

Public Exploit
Unrestricted Upload of File with Dangerous Type in bookstackapp/bookstack

Description

bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.23%
Third-Party Advisory github.com Third-Party Advisory huntr.dev
Affected: bookstackapp bookstackapp/bookstack
Published at:
Updated at:

References

Link Tags
https://huntr.dev/bounties/f115bdf5-c06b-4627-a6fa-ba6904a43ba3 patch exploit third party advisory issue tracking
https://github.com/bookstackapp/bookstack/commit/64937ab826b56d086af9ecea532510d37520ebc8 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3906?
CVE-2021-3906 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3906?
To fix CVE-2021-3906, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3906 being actively exploited in the wild?
It is possible that CVE-2021-3906 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3906?
CVE-2021-3906 affects bookstackapp bookstackapp/bookstack.
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