CVE-2025-66514 describes a stored HTML injection vulnerability in Nextcloud Mail versions prior to 5.5.3, allowing an authenticated user to inject HTML into email subjects. This medium-severity vulnerability (CVSS 5.4) requires user interaction and a low-privileged account, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.5.3CPE matchmatch criteria | cpe:2.3:a:nextcloud:mail:*:*:*:*:*:nextcloud:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.