Immediate
Upgrade nginx-proxy-manager to the vendor-fixed release first and verify production version consistency.
root@hackertop:~/vulnfeed/CVE-2026-40519#
CVE-2026-40519
MEDIUM
Command Injection
✓ Patched◉ PoC 公开◉ Mitigation Active
Lifecycle 5/7
NginxProxyManager nginx-proxy-manager up to 2.15.1 backend/setup.js setupCertbotPlugins dns_provider_credentials os command injection
LIFECYCLE
6.1
CVSS
Vulnerability Description
A vulnerability was found in NginxProxyManager nginx-proxy-manager up to 2.15.1 (Firewall Software). It has been rated as critical. Affected by this issue is the function setupCertbotPlugins of the file backend/setup.js. Applying the patch a5db5ed156355e3088e7d1ceb0533d4bae922def is able to eliminate this problem.
Root Cause Analysis
The manipulation of the argument dns_provider_credentials with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Impact: Impacted is confidentiality, integrity, and availability.
Countermeasure: Applying the patch a5db5ed156355e3088e7d1ceb0533d4bae922def is able to eliminate this problem.
Impact: Impacted is confidentiality, integrity, and availability.
Countermeasure: Applying the patch a5db5ed156355e3088e7d1ceb0533d4bae922def is able to eliminate this problem.
Validation (PoC/EXP) - Looking for Contributors
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Mitigation Plan - Sorted by Priority
High
After upgrade, validate configuration and restart services where needed to ensure the fix is active.
High
Use logs and IOCs to hunt through production traffic and confirm whether exploitation traces already exist.
Medium
Keep this issue on the watch list and follow vendor advisories, rollback notices, and new variants.
Vulnerability Lifecycle - Click each stage to inspect details
The issue has entered HackerTop VulnFeed and is now being tracked by the community.
The vulnerability has been synchronized into the platform and entered the visible triage flow.
Initial impact validation is complete based on current disclosure, technical details, and public intelligence.
A public proof path already exists for reference.
No in-the-wild exploitation has been confirmed yet, but monitoring should continue.
The vendor has published a fix. Prioritize upgrade rollout.
Patch and temporary mitigation options are available. Validate deployed versions and IOC coverage.
6.1
CVSS
Temp Score
6.1
MEDIUM
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metric Details
Attack Vector
Attack Vector
Network
Attack Complexity
Attack Complexity
Low
Privileges Required
Privileges Required
None
User Interaction
User Interaction
None
Confidentiality Impact
Confidentiality Impact
High
Integrity Impact
Integrity Impact
High
Availability Impact
Availability Impact
High
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CVE-2026-40519 · CVSS 6.1 · Patched
