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SECURITY SCORE
Certificate Information
Subject
CN=cloud.nextcloud.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
January 19, 2026
Valid Until
April 19, 2026
81 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
0B:54:56:AD:4D:40:F8:1C:D7:23:A4:32:AB:17:6F:41:90:42:AF:12:52:14:59:F6:B7:45:41:A2:E3:7C:71:57
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Basic
default-src; base-uri; manifest-src; +12 more
default-src 'none';base-uri 'none';manifest-src 'self';script-src 'nonce-nchW3PDAOpJsrjkg3Orer4tqrWlrBw02TdS7FmTeBUU=' blob: 'wasm-unsafe-eval';script-src-elem 'strict-dynamic' 'nonce-nchW3PDAOpJsrjkg3Orer4tqrWlrBw02TdS7FmTeBUU=' blob: 'wasm-unsafe-eval';style-src 'self' 'unsafe-inline';img-src 'self' data: blob: https://user-images.githubusercontent.com https://*.tile.openstreetmap.org https://collabora-staging.nextcloud.com;font-src 'self' data: *;connect-src 'self' blob: https://sentry.io stun.nextcloud.com:443 turn.nextcloud.com:443 wss://s4.nextcloud.com * wss://push.cloud.nextcloud.com;media-src 'self' blob:;frame-src 'self' https://www.openstreetmap.org nc: https://collabora-staging.nextcloud.com;child-src blob: 'self';frame-ancestors 'self' https://collabora-staging.nextcloud.com;worker-src blob: 'self' *;form-action 'self' https://collabora-staging.nextcloud.com
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports