CVE-2026-44015

Description

Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks.

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CVSS v3.1 Score

8.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Vendor	Product	Versions
nginxui	nginx_ui	< 2.3.4

References

Advisories & Patches

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wr32-99hh-6f35 https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wr32-99hh-6f35

Exploits

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wr32-99hh-6f35 https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wr32-99hh-6f35

Frequently Asked Questions

What is CVE-2026-44015? +

Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks. It has a CVSS v3.1 base score of 8.5 (HIGH).

How severe is CVE-2026-44015? +

CVE-2026-44015 has a CVSS v3.1 score of 8.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-44015? +

CVE-2026-44015 affects products from nginxui, specifically: nginx_ui. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-44015? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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