🛡️ CVE-2021-4171 — calibreweb
Description
calibre-web is vulnerable to Business Logic Errors
calibre-web is vulnerable to Business Logic Errors
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
Affected software
CVE-2021-4171 is recorded against 1 package.
- calibreweb (fixed in 0.6.15)
Timeline and source
Published on 21 January 2022 and last revised on 1 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
huntr.dev (Web)
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| calibreweb | — | 0.6.15 |
References
Similar Threats
- Low CVE-2025-65858
- High CVE-2025-6998
- Critical CVE-2025-7404
- Unknown CVE-2021-3986
- Unknown CVE-2021-3987
More CVE 2021 advisories
Browse all of CVE 2021 in the advisory index.
Exploit Protection
Are you running calibreweb?
CVE-2021-4171 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
Check My Site For CVE-2021-4171 →No credit card required · Results in minutes
ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.