CVE-2021-3987

Public Exploit
Improper Access Control in janeczku/calibre-web

Description

An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.

Categories

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
EPSS 0.03%
Affected: janeczku janeczku/calibre-web
Published at:
Updated at:

References

Link Tags
https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df exploit
https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874 patch

Frequently Asked Questions

What is the severity of CVE-2021-3987?
CVE-2021-3987 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3987?
To fix CVE-2021-3987, 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-2021-3987 being actively exploited in the wild?
It is possible that CVE-2021-3987 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-2021-3987?
CVE-2021-3987 affects janeczku janeczku/calibre-web.
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