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Vulnerable Software

Vulnerability Details CVE-2025-66554

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 8.1%

CVSS Severity

CVSS v3 Score 3.5

References

Products affected by CVE-2025-66554

Nextcloud » Contacts » Version: 5.0.0

cpe:2.3:a:nextcloud:contacts:5.0.0
Nextcloud » Contacts » Version: 5.0.1

cpe:2.3:a:nextcloud:contacts:5.0.1
Nextcloud » Contacts » Version: 5.0.2

cpe:2.3:a:nextcloud:contacts:5.0.2
Nextcloud » Contacts » Version: 5.0.3

cpe:2.3:a:nextcloud:contacts:5.0.3
Nextcloud » Contacts » Version: 5.1.0

cpe:2.3:a:nextcloud:contacts:5.1.0
Nextcloud » Contacts » Version: 5.2.0

cpe:2.3:a:nextcloud:contacts:5.2.0
Nextcloud » Contacts » Version: 5.3.0

cpe:2.3:a:nextcloud:contacts:5.3.0
Nextcloud » Contacts » Version: 5.3.1

cpe:2.3:a:nextcloud:contacts:5.3.1
Nextcloud » Contacts » Version: 5.3.2

cpe:2.3:a:nextcloud:contacts:5.3.2
Nextcloud » Contacts » Version: 5.4.0

cpe:2.3:a:nextcloud:contacts:5.4.0
Nextcloud » Contacts » Version: 5.4.1

cpe:2.3:a:nextcloud:contacts:5.4.1
Nextcloud » Contacts » Version: 5.4.2

cpe:2.3:a:nextcloud:contacts:5.4.2
Nextcloud » Contacts » Version: 5.4.3

cpe:2.3:a:nextcloud:contacts:5.4.3
Nextcloud » Contacts » Version: 5.5.0

cpe:2.3:a:nextcloud:contacts:5.5.0
Nextcloud » Contacts » Version: 5.5.1

cpe:2.3:a:nextcloud:contacts:5.5.1
Nextcloud » Contacts » Version: 5.5.2

cpe:2.3:a:nextcloud:contacts:5.5.2
Nextcloud » Contacts » Version: 5.5.3

cpe:2.3:a:nextcloud:contacts:5.5.3
Nextcloud » Contacts » Version: 6.0.0

cpe:2.3:a:nextcloud:contacts:6.0.0
Nextcloud » Contacts » Version: 6.0.1

cpe:2.3:a:nextcloud:contacts:6.0.1
Nextcloud » Contacts » Version: 6.0.2

cpe:2.3:a:nextcloud:contacts:6.0.2
Nextcloud » Contacts » Version: 6.0.3

cpe:2.3:a:nextcloud:contacts:6.0.3
Nextcloud » Contacts » Version: 6.0.4

cpe:2.3:a:nextcloud:contacts:6.0.4
Nextcloud » Contacts » Version: 6.0.5

cpe:2.3:a:nextcloud:contacts:6.0.5
Nextcloud » Contacts » Version: 7.0.0

cpe:2.3:a:nextcloud:contacts:7.0.0
Nextcloud » Contacts » Version: 7.0.1

cpe:2.3:a:nextcloud:contacts:7.0.1
Nextcloud » Contacts » Version: 7.0.2

cpe:2.3:a:nextcloud:contacts:7.0.2
Nextcloud » Contacts » Version: 7.0.3

cpe:2.3:a:nextcloud:contacts:7.0.3
Nextcloud » Contacts » Version: 7.0.4

cpe:2.3:a:nextcloud:contacts:7.0.4
Nextcloud » Contacts » Version: 7.0.5

cpe:2.3:a:nextcloud:contacts:7.0.5
Nextcloud » Contacts » Version: 7.0.6

cpe:2.3:a:nextcloud:contacts:7.0.6
Nextcloud » Contacts » Version: 7.1.0

cpe:2.3:a:nextcloud:contacts:7.1.0
Nextcloud » Contacts » Version: 7.1.1

cpe:2.3:a:nextcloud:contacts:7.1.1
Nextcloud » Contacts » Version: 7.1.2

cpe:2.3:a:nextcloud:contacts:7.1.2
Nextcloud » Contacts » Version: 7.1.3

cpe:2.3:a:nextcloud:contacts:7.1.3
Nextcloud » Contacts » Version: 7.1.4

cpe:2.3:a:nextcloud:contacts:7.1.4
Nextcloud » Contacts » Version: 7.1.5

cpe:2.3:a:nextcloud:contacts:7.1.5
Nextcloud » Contacts » Version: 7.2.0

cpe:2.3:a:nextcloud:contacts:7.2.0
Nextcloud » Contacts » Version: 7.2.1

cpe:2.3:a:nextcloud:contacts:7.2.1
Nextcloud » Contacts » Version: 7.2.2

cpe:2.3:a:nextcloud:contacts:7.2.2
Nextcloud » Contacts » Version: 7.2.3

cpe:2.3:a:nextcloud:contacts:7.2.3
Nextcloud » Contacts » Version: 7.2.4

cpe:2.3:a:nextcloud:contacts:7.2.4

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2025-66554

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