CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NCVE-2021-3987
Medium (4.3) in janeczku calibre-web. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in calibreweb 0.6.15.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-862, CWE-284
- Published
- Modified
- Record from
- the NVD, synced
Affected
- janeczku:calibre-web
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fj5v-w2jp-wqvj | PyPI | calibreweb | <0.6.15 | 0.6.15 |
| PYSEC-2026-1229 | PyPI | calibreweb | <0.6.15 | 0.6.15 |