CVE-2026-44515— Nextcloud News: Authenticated blind SSRF via feed URL
Possible ATT&CK Techniques 2AI
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I. Basic Information for CVE-2026-44515
Vulnerability Information
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Vulnerability Title
Nextcloud News: Authenticated blind SSRF via feed URL
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud News app 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud News app是Nextcloud开源的一个RSS/Atom新闻聚合器。 Nextcloud News app 28.3.0-beta.1之前版本存在代码问题漏洞，该漏洞源于未验证用户提供的feed URL，可能导致服务器端请求伪造攻击，扫描或探测内部网络服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-44515
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- https://github.com/nextcloud/news/security/advisories/GHSA-jcfr-rmj6-cpfjx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-44515
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V. Comments for CVE-2026-44515
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