External risk intelligence

DayuanJiang next-ai-draw-io Information Disclosure via X-Forwarded-For Header

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-50755

The vulnerability affects a web-based application (next-ai-draw-io) and involves the manipulation of HTTP headers (X-Forwarded-For). Web applications are commonly deployed as internet-facing services, making the attack surface reachable via standard web requests from the public internet.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory addresses a critical vulnerability in the DayuanJiang next-ai-draw-io application. The issue allows a remote attacker to potentially access sensitive information through manipulation of the X-Forwarded-For header. While the specific impact depends on the application's deployment and data handled, the nature of the vulnerability warrants a review of its presence within our environment.

Information disclosure vulnerability in drawing tool.
Critical rating, potential remote data exposure.
Verify exposure and potential business relevance.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a specially crafted request to a web application. By manipulating the `X-Forwarded-For` header, they could trick the application into revealing sensitive information. This could occur without any authentication or user interaction, potentially leading to unauthorized access to data.

No authentication required.
Triggered by a malicious HTTP header.
Risk of sensitive information disclosure.

Live Threat

Current exploitation, exposure, and threat context

A remote attacker could potentially access sensitive information by exploiting a vulnerability related to the X-Forwarded-For header. This could occur when the affected system processes this header in a way that exposes internal details.

Sensitive information exposure.
Via crafted X-Forwarded-For header.
Unauthorized access to system details.

Operational Fix

Recommended remediation, mitigation, and detection steps

Ownership of this vulnerability lies with the teams managing the DayuanJiang next-ai-draw-io application. The first critical step is to identify all instances of this application, assess their reachability and business criticality, and then pinpoint the accountable owner for each. Once ownership is confirmed, a remediation plan should be developed based on the identified risk.

Application owners should manage the issue.
Verify application reachability and criticality.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the DayuanJiang next-ai-draw-io software?

next-ai-draw-io is a web-based application designed for creating and managing diagrams and drawings. It functions by processing incoming web requests to render or display visual content. Because it operates as a web service, it relies on standard communication protocols to handle data exchanges between users and the server.

How does CVE-2026-50755 cause information disclosure?

This vulnerability is classified as CWE-290, which involves authentication bypass by spoofing. In this specific case, the software incorrectly processes the X-Forwarded-For HTTP header. By manipulating this header, an attacker can trick the application into misidentifying the request origin or bypassing access controls, ultimately leading to the unauthorized release of sensitive system data.

Does a user need to click a link to trigger this vulnerability?

No. The vulnerability does not require any user interaction or authentication to be triggered. An attacker only needs to send a specially crafted HTTP request containing a manipulated X-Forwarded-For header to the application. Simple, automated web requests that do not include the malicious header manipulation will not trigger this specific flaw.

Is my instance of next-ai-draw-io at risk?

According to Halo Surface Signal, this vulnerability is highly relevant if your application is internet-facing. Because the bug is triggered via standard web requests, services exposed to the public internet are directly reachable by attackers. If the application is hosted on an internal network without internet exposure, the immediate risk of external exploitation is significantly reduced.

What should I do if I run next-ai-draw-io?

First, locate and inventory all deployed instances of the application within your infrastructure. Once identified, evaluate the network accessibility and the sensitivity of the data handled by each instance. Assign an owner to each deployment who can then prioritize the development of a remediation plan based on the potential business impact.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.