Description

Contacts app for Nextcloud easily syncs contacts from various devices with your Nextcloud and allows editing. Prior to 5.5.4, 6.0.6, and 7.2.5, a malicious user was able to modify their organisation and title field to load additional CSS files. Javascript and other options were correctly blocked by the content security policy of the Nextcloud Server code. This vulnerability is fixed in 5.5.4, 6.0.6, and 7.2.5.

INFO

Published Date :

2025-12-05T17:50:59.860Z

Last Modified :

2025-12-08T19:51:03.328Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-66554 vulnerability.

Vendors Products
Nextcloud
  • Contacts
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-66554.

URL Resource
https://github.com/nextcloud/contacts/commit/d954d098978dde1f121600e8b994e02f293c68b1 cve-icon cve-icon
https://github.com/nextcloud/contacts/pull/4619 cve-icon cve-icon
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9v78-cpfc-v6h2 cve-icon cve-icon
https://hackerone.com/reports/3293290 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
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Integrity Impact
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