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Vulnerability DatabaseCVE-2025-66554

CVE-2025-66554: 
NixOS vulnerability analysis and mitigation

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.

Source: NVD

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-69264CRITICAL9.8
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CVE-2025-69263HIGH8.8
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CVE-2025-69262HIGH7.8
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CVE-2025-20807MEDIUM6.7
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CVE-2026-21885MEDIUM6.5
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