CVEvulnerability

CVE-2025-66514

5.4 MEDIUM Published 2025-12-05 Modified 2026-10-15 Official page ↗
Status
Analyzed
Published
2025-12-05
Last modified
2026-10-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.5 LOW — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-79

Description

Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Prior to 5.5.3, a stored HTML injection in the Mail app's message list allowed an authenticated user to inject HTML into the email subjects. Javascript was correctly blocked by the content security policy of the Nextcloud Server code.

Affected configurations

• nextcloud mail (< 5.5.3)

Related

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References