PT-2026-40964 · Nextcloud · Nextcloud News

Banimontoya · Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-44515

Positive Technologies (AI Summary)

CVSS v4.0

2.3

Low

Base vector

AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Nextcloud News versions prior to 28.3.0-beta.1

Description Nextcloud News, an RSS/Atom feed reader, allows authenticated users to add feeds via the web interface or API. An authenticated attacker can provide a URL pointing to localhost or internal/private IP ranges, triggering the server to perform server-side HTTP requests to those destinations without relaying the result. This leads to blind Server-Side Request Forgery (SSRF)—a flaw where a server is tricked into making requests to an unintended location—which can be used to scan or probe internal network services reachable from the server.

Recommendations Update to version 28.3.0-beta.1.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-44515

GHSA-JCFR-RMJ6-CPFJ

Affected Products

Nextcloud News

References · 5

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44515.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-44515 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-44515 · Security Note
• https://github.com/nextcloud/news/security/advisories/GHSA-jcfr-rmj6-cpfj · Note
• https://t.me/CVEtracker/53806 · Telegram Post