VulnerabilityAnalyzed

CVE-2021-3987

An improper access control vulnerability exists in janeczku/calibre-web.

MEDIUM 4.3EPSS 0.35%

Does this matter?

Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.35% probability · 28th percentile
CISA KEV: Not listed
Weakness: CWE-284, CWE-862
Affected: janeczku/calibre-web
Source: security@huntr.dev

References

https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874Patch
https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71dfExploit

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.