CVE-2026-44515

Nextcloud News: Authenticated blind SSRF via feed URL

State: Published
Severity: 2.3 Low
Published: May 14, 2026
Updated: May 14, 2026
Reserved: May 6, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	2.3 Low	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	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
newsnextcloud	< 28.3.0-beta.1Affected

References

https://github.com/nextcloud/news/security/advisories/GHSA-jcfr-rmj6-cpfj

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