Bug 2477492 (CVE-2026-44515)

Summary: CVE-2026-44515 Nextcloud News: Nextcloud News: Blind Server-Side Request Forgery (SSRF) via crafted feed URLs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Nextcloud News. An authenticated attacker could exploit this by providing a malicious feed URL that points to internal or private network addresses. This action causes the Nextcloud server to perform server-side HTTP requests to attacker-controlled destinations without relaying the results, enabling blind Server-Side Request Forgery (SSRF). This vulnerability can be used to scan or probe internal network services accessible from the Nextcloud server, potentially leading to information disclosure about the internal network architecture.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-14 17:01:42 UTC
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.