PT-2025-49294
CVE-2025-66514
·
Published
2025-12-05
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Updated
2026-02-09
Description by
CVSS 3.1
5.4
MediumMetricsAV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions
Nextcloud Mail versions prior to 5.5.3
Description
A stored HTML injection issue exists in the Mail app's message list, potentially allowing an authenticated user to inject HTML into email subjects. The Nextcloud Server’s content security policy blocks Javascript, mitigating some of the risk.
Recommendations
Update Nextcloud Mail to version 5.5.3 or later.
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