Improper Access Control in janeczku/calibre-web
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | calibreweb | < 0.6.15 | 0.6.15 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-3987
- https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874
- https://github.com/janeczku/calibre-web
- https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df
- https://pypi.org/project/calibreweb
- https://github.com/advisories/GHSA-fj5v-w2jp-wqvj
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-284, CWE-862- Platform
- Python (PyPI)
- Package
calibreweb- Disclosed
- 15.11.2024
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1229 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-fj5v-w2jp-wqvj - CC BY 4.0
Vulnerability history: calibreweb
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 18
- First → latest
- 01.2022 12.2025
- Without a fix
- 4
- Exploited in attacks
- 0
Severity breakdown
- Critical 4
- High 4
- Medium 9
- Low 1
Disclosures per year
- 2022: 9
- 2023: 2
- 2024: 4
- 2025: 3
- 2026: 0
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Improper Access Control in janeczku/calibre-web this entry
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