CVE-2026-44515: Nextcloud News: Authenticated blind SSRF via feed URL
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-44515?
CVE-2026-44515 is considered a critical vulnerability due to its potential for authenticated blind SSRF attacks.
How do I fix CVE-2026-44515?
To fix CVE-2026-44515, upgrade Nextcloud News to version 28.3.0-beta.1 or later.
Who is affected by CVE-2026-44515?
Authenticated users of Nextcloud News versions prior to 28.3.0-beta.1 are affected by CVE-2026-44515.
What type of attack is possible with CVE-2026-44515?
CVE-2026-44515 allows for authenticated blind SSRF attacks that can compromise internal services.
When was CVE-2026-44515 disclosed?
CVE-2026-44515 was disclosed before version 28.3.0-beta.1 of Nextcloud News.