CVE-2026-72552
Received Received - Intake

Server-Side Request Forgery in Dub

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description
A server-side request forgery vulnerability in Dub as of 2026-07-10 allows unauthenticated remote attackers to make the server issue HTTP requests to arbitrary internal or external hosts via the metatags edge endpoint. The endpoint fetches any caller-supplied URL without applying a denylist or requiring authentication. An attacker can use this to scan internal services or exfiltrate data from cloud metadata endpoints.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-72552
EUVD
EUVD-2026-56022

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
dub_technologies dub *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This is a server-side request forgery (SSRF) vulnerability in Dub, an open-source link attribution platform. It allows unauthenticated remote attackers to trick the server into making HTTP requests to arbitrary internal or external hosts via the metatags edge endpoint. The endpoint fetches any URL provided by the attacker without restrictions or authentication.

Detection Guidance

Check if your Dub server is exposing the metatags edge endpoint by sending a request to /metatags/edge?url=http://example.com. If the server responds with metadata from the target URL, the vulnerability may be present.

Impact Analysis

An attacker could exploit this to scan internal services within your network or exfiltrate sensitive data from cloud metadata endpoints. This could lead to unauthorized access to internal systems, data leaks, or further attacks on your infrastructure.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations using Dub may face compliance violations if sensitive data is leaked through this flaw.

Mitigation Strategies

Disable or restrict access to the /metatags/edge endpoint. Update Dub to the latest patched version if available. Implement network-level restrictions to block unauthorized outbound requests from the server.

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