CVE-2021-4171 Business Logic Errors in janeczku/calibre-web
High 7.7
Published
Updated
Check this codebase for CVE-2021-4171 and fix it if it is affected.
What it is: CVE-2021-4171 is a high-severity vulnerability in janeczku/calibre-web, published on 17 Jan 2022. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-4171 in the wild and no public exploit code.
Affected packages and fixed versions:
- calibreweb (PyPI): affected all versions; fixed in 0.6.15
- calibreweb (PyPI): affected all versions; fixed in 0.6.15
- calibreweb (PyPI): affected all versions; fixed in 0.6.15
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-4171/ (Markdown: https://insights.sbomify.com/CVE-2021-4171/index.md)
Business logic errors in Calibre Web allow attackers to bypass intended application workflows, requiring users to update the software.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-4171?
CVE-2021-4171 is a high-severity vulnerability in janeczku/calibre-web, published on 17 Jan 2022. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
calibre-web is vulnerable to Business Logic Errors
Weakness: CWE-840
Which versions are affected by CVE-2021-4171?
3 open source packages ship an affected version, including calibreweb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
calibreweb PyPI | All versions | 0.6.15 |
calibreweb PyPI | All versions | 0.6.15 |
calibreweb PyPI | All versions | 0.6.15 |
Products include Janeczku Calibre-Web.
How do I fix CVE-2021-4171?
Upgrade calibreweb to 0.6.15 or later.
Is CVE-2021-4171 being exploited?
There is no known exploitation of CVE-2021-4171 in the wild and no public exploit code.
Other vulnerabilities in janeczku/calibre-web
- CVE-2022-30765 SQL injection in calibreweb
- CVE-2020-12627 Hardcoded credentials in n/a
- CVE-2022-0990 Server-Side Request Forgery (SSRF) in janeczku/calibre-web
- CVE-2022-0767 Server-Side Request Forgery (SSRF) in janeczku/calibre-web
- CVE-2022-0939 Server-Side Request Forgery (SSRF) in janeczku/calibre-web
Sources
Also known as GHSA-xp7p-3gx7-j6wx, PYSEC-2026-307.