CVE-2025-66554: Nextcloud Contacts vulnerable to Stored XSS in contacts app via organisation and title field
nextcloud · security-advisories
Affected: nextcloud security-advisories · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Percentile not published
DescriptionCVE.org
The full CVE record could not be read just now. It is linked under References, and this page fills in once it has been read.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-site Scripting
- Vendor
- nextcloud
- Published
- December 2025
- Bounty reports
- 1 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2025-66554
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- Stored XSS in contacts app via organisation and title fieldNextcloud · 2026 · low severityValid
CoverageNo articles yet
No CyberSIXT article names CVE-2025-66554 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.