CVE-2026-56771

HighCVSS 8.5

Published: 25/06/2026(UTC)Updated: 14/07/2026(UTC)Translated: 15/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.20%

10th percentile - higher than 10% of all known CVEs

Summary

NewsBlur before version 14.5.0 contains a server-side request forgery (SSRF) vulnerability in the add_url endpoint. The lack of private IP address filtering allows authenticated users to make arbitrary requests to internal networks.

Risk Assessment

Attackers can access localhost services and cloud metadata endpoints, enabling internal network scanning and exfiltration of sensitive data.

Recommendation

Immediately upgrade NewsBlur to version 14.5.0 or later, which includes a fix for the SSRF vulnerability.

Other vulnerabilities in NewsBlur

CVE-2026-56772Medium
NewsBlur before version 14.5.0 contains a broken access control vulnerability that allows authenticated users to read private notification feeds by supplying arbitrary user_id values to the GET /social/interactions endpoint without ownership verification. Attackers can enumerate user_id values to access another user's follows, replies, and social activity without authorization.

Original NVD description (English source)

NewsBlur before version 14.5.0 contains a server-side request forgery vulnerability in the add_url endpoint that allows authenticated users to make arbitrary server requests to internal networks by failing to filter private IP addresses. Attackers can exploit this to access localhost services and cloud metadata endpoints, enabling internal network scanning and sensitive data exfiltration.