CVE Catalog

CVE-2026-44515

LowCVSS 2.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.19%

8th percentile - higher than 8% of all known CVEs

Summary

Nextcloud News is an RSS/Atom feed reader. Prior to 28.3.0-beta.1, authenticated users could add feeds with URLs pointing to internal/private IP ranges or localhost, causing the Nextcloud server to make server-side HTTP requests to attacker-controlled destinations (blind SSRF).

Risk Assessment

Blind SSRF allows scanning and probing of internal network services reachable from the Nextcloud server, potentially revealing internal infrastructure details.

Recommendation

Update Nextcloud News to version 28.3.0-beta.1 or later and consider restricting the server's access to internal network ranges.

Related vulnerabilities

Original NVD description (English source)

Nextcloud News is an RSS/Atom feed reader. Prior to 28.3.0-beta.1, Nextcloud News allows authenticated users to add feeds by providing a feed URL (via the web interface or the API). In affected versions, an authenticated attacker could provide a URL pointing to internal/private IP ranges or localhost, causing the Nextcloud server to perform server-side HTTP requests to attacker-controlled destinations, but not relaying the result. This enables blind SSRF, which can be used to scan or probe internal network services that are reachable from the Nextcloud server. This vulnerability is fixed in 28.3.0-beta.1.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS