CVE-2021-3987: Improper Access Control in janeczku/calibre-web

November 15, 2024

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.

References

github.com/advisories/GHSA-fj5v-w2jp-wqvj
github.com/janeczku/calibre-web
github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874
huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df
nvd.nist.gov/vuln/detail/CVE-2021-3987

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