Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/samuelclay/NewsBlur/commit/2e6c6812c94f35a731bda864de5aef39f1
- https://github.com/samuelclay/NewsBlur/commit/af742daeca7cc6c8b0d58cbea381e7bc44
- https://github.com/samuelclay/NewsBlur/releases/tag/Android_14.5.0
- https://www.vulncheck.com/advisories/newsblur-server-side-request-forgery-via-ad
FAQ
What is CVE-2026-56771?
CVE-2026-56771 is a vulnerability with a CVSS score of 8.5 (HIGH). 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 fa...
How severe is CVE-2026-56771?
CVE-2026-56771 has been rated HIGH with a CVSS base score of 8.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56771?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.