CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2021-3986
Medium (4.3) in janeczku calibre-web. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in calibreweb 0.6.15.
A vulnerability in janeczku/calibre-web allows unauthorized users to view the names of private shelves belonging to other users. This issue occurs in the file shelf.py at line 221, where the name of the shelf is exposed in an error message when a user attempts to remove a book from a shelf they do not own. This vulnerability discloses private information and affects all versions prior to the fix.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-31)
- CWE
- CWE-209
- Published
- Modified
- Record from
- the NVD, synced
Affected
- janeczku:calibre-web
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-m982-h4f8-g4hf | PyPI | calibreweb | <0.6.15 | 0.6.15 |
| PYSEC-2026-1232 | PyPI | calibreweb | <0.6.15 | 0.6.15 |