The vulnerability of the Nextcloud Contacts application, a cloud-based software for creating and using a Nextcloud data storage system, stems from the lack of protective measures taken for the web page structure. This allows attackers to compromise the confidentiality and integrity of the protected information.
🗓️ 19 Mar 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 14 Views
| Reporter | Title | Published | Views | Family All 12 |
|---|---|---|---|---|
 | CVE-2025-66554 | 5 Dec 202519:33 | – | circl |
 | Nextcloud 跨站脚本漏洞 | 5 Dec 202500:00 | – | cnnvd |
 | CVE-2025-66554 | 5 Dec 202517:50 | – | cve |
 | CVE-2025-66554 Nextcloud Contacts vulnerable to Stored XSS in contacts app via organisation and title field | 5 Dec 202517:50 | – | cvelist |
 | EUVD-2025-201461 | 5 Dec 202517:50 | – | euvd |
 | Stored XSS in contacts app via organisation and title field | 5 Dec 202507:54 | – | nextcloud |
 | Nextcloud: Stored XSS in contacts app via organisation and title field | 10 Aug 202501:17 | – | hackerone |
 | CVE-2025-66554 | 5 Dec 202518:15 | – | nvd |
 | PT-2025-49300 | 5 Dec 202500:00 | – | ptsecurity |
 | CVE-2025-66554 | 9 Dec 202508:27 | – | redhatcve |
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19 Mar 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 35.4
CVSS 25.5
EPSS0.00245