CVE-2026-56771
Last modified
CVE-2026-56771 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/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
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-56771?
How severe is CVE-2026-56771?
How do I fix CVE-2026-56771?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-56766Hydra through 9.7, fixed in commit 9cc84c2, contains a stack…8.8
- CVE-2026-56767Maxun before 0.0.42 contains a cross-tenant insecure direct …8.8
- CVE-2026-56768Seahub before 13.0.23 does not enforce SHARE_LINK_LOGIN_REQU…8.8
- CVE-2026-56769Huly Platform through 0.7.423, fixed in commit 68cbf8a conta…8.5
- CVE-2026-5677A security flaw has been discovered in Totolink A7100RU 7.4c…7.3
- CVE-2026-56770libais through 0.15 VdmStream::AddLine uses an unchecked sen…7.5
- CVE-2026-56772NewsBlur before 14.5.0 contains a broken access control vuln…5.3
- CVE-2026-56773Teable's v2 REST API controller lacks @Permissions metadata …8.8
- CVE-2026-56774Kanboard through 1.2.52, fixed in commit 928c68a, UserViewCo…5.4
- CVE-2026-56775n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authoriz…5.4
- CVE-2026-56776n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authoriz…7.4
- CVE-2026-56777n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstr…5.3
Are you affected by CVE-2026-56771?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST