The vulnerability of NextCloud Mail’s email client, which stems from the lack of protective measures for the website structure, allows attackers to execute arbitrary code.
🗓️ 25 Mar 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 10 Views
| Reporter | Title | Published | Views | Family All 12 |
|---|---|---|---|---|
 | CVE-2025-66514 | 5 Dec 202514:50 | – | circl |
 | Nextcloud Mail 跨站脚本漏洞 | 5 Dec 202500:00 | – | cnnvd |
 | CVE-2025-66514 | 5 Dec 202517:32 | – | cve |
 | CVE-2025-66514 Nextcloud Mail stored HTML injection in subject text | 5 Dec 202517:32 | – | cvelist |
 | EUVD-2025-201464 | 5 Dec 202517:32 | – | euvd |
 | Mail stored HTML injection in subject text | 5 Dec 202508:06 | – | nextcloud |
 | Nextcloud: Mail stored HTML injection in subject text | 24 Sep 202517:36 | – | hackerone |
 | CVE-2025-66514 | 5 Dec 202518:15 | – | nvd |
 | PT-2025-49294 | 5 Dec 202500:00 | – | ptsecurity |
 | CVE-2025-66514 | 9 Dec 202508:27 | – | redhatcve |
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25 Mar 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 24.7
CVSS 35.4
EPSS0.00245