CRITICAL9.8

PYSEC-2026-304

Server-Side Request Forgery in calibreweb

Quick fix

PYSEC-2026-304 — calibreweb: upgrade to the fixed version with the command below.

pip install --upgrade 'calibreweb>=0.6.17'

Details

calibreweb prior to version 0.6.17 is vulnerable to server-side request forgery (SSRF). This is due to an incomplete fix for [CVE-2022-0339](https://github.com/advisories/GHSA-4w8p-x6g8-fv64). The blacklist does not check for `0.0.0.0`, which would result in a payload of `0.0.0.0` resolving to `localhost`.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/calibreweb

Introduced in: 0Fixed in: 0.6.17

Fixpip install --upgrade 'calibreweb>=0.6.17'

References

https://nvd.nist.gov/vuln/detail/CVE-2022-0766[ADVISORY]
https://github.com/janeczku/calibre-web/commit/965352c8d96c9eae7a6867ff76b0db137d04b0b8[WEB]
https://github.com/janeczku/calibre-web[PACKAGE]
https://huntr.dev/bounties/7f2a5bb4-e6c7-4b6a-b8eb-face9e3add7b[WEB]
https://pypi.org/project/calibreweb[PACKAGE]
https://github.com/advisories/GHSA-2647-c639-qv2j[ADVISORY]