CVE-2026-44515CWE-918

Nextcloud News: Authenticated blind SSRF via feed URL

Low · published May 14, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
21.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
2.3 · LOW
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00295 · 21.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-05-14T16:36Z
EPSS history
Timeline
  • 14 MAY 16:36Z
    Nextcloud News: Authenticated blind SSRF via feed URL
    cvelistv5