External risk intelligence

Uppy allows attackers to take control of your services or steal customer data

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-70023

A critical security flaw in the transloadit uppy file upload tool could allow attackers to take control of your services or steal sensitive customer data. This affects internet-facing web applications.

4Halo Surface Signal

External exposure likelihood

Halo Surface Signal score for CVE-2025-70023

Uppy is a file upload library designed for integration into web applications. Because applications that implement file upload features are typically designed to accept content from users over the internet, this component is commonly deployed in internet-facing web services.

Horizon Alert

Summary of the vulnerability and why it matters

An issue has been found in transloadit uppy, a file upload library. This vulnerability could allow for unauthorized access or manipulation of resources.

  • Accessible from the internet.
  • Critical impact to confidentiality, integrity, and availability.
  • Affects web applications using the uppy library.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this flaw in transloadit uppy v0.25.6 by sending specially crafted input to a web application using the library. This could allow them to execute arbitrary code on the server, leading to a complete system compromise.

  • Unauthenticated attacker can abuse.
  • Target is the upload functionality.
  • Input validation is the key.

Live Threat

Current exploitation, exposure, and threat context

Attackers may find this vulnerability appealing due to its critical severity and potential for widespread exploitation across internet-facing web services. The reported issue in transloadit uppy, a file upload library, could be leveraged for significant impact.

  • Public exploit details are limited.
  • KEV listing is absent.
  • Recency signal is weak.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Prioritize investigating transloadit uppy installations for potential compromise, as this critical vulnerability allows for unauthenticated remote code execution. Act quickly to assess your exposure and implement mitigations, given the high exploitability.

  • Isolate or take affected services offline.
  • Monitor network traffic for indicators of compromise.
  • Apply patches once available.

Frequently asked questions

What is the software context for CVE-2025-70023 affecting transloadit uppy?

CVE-2025-70023 is a critical vulnerability discovered in transloadit uppy version 0.25.6. Uppy is a file upload library commonly integrated into web applications. Its function as a file uploader means it's often exposed to the internet, making it a target for attacks that could compromise the hosting services or customer data.

What is the weakness in CVE-2025-70023 and how is it triggered?

The vulnerability in transloadit uppy is classified as CWE-843, which involves accessing resources using an incompatible type. An unauthenticated attacker can exploit this by sending specially crafted input to a web application that uses the vulnerable uppy library, potentially leading to arbitrary code execution on the server.

What is the trigger path for CVE-2025-70023 and what is the scope of impact?

The vulnerability is triggered through the upload functionality of web applications utilizing transloadit uppy v0.25.6. The scope of impact is broad, as successful exploitation can lead to a complete system compromise, affecting confidentiality, integrity, and availability.

What is the relevance of CVE-2025-70023 given its critical severity and exposure?

This vulnerability is highly relevant due to its critical severity (CVSS 9.8) and external attack vector, meaning it can be exploited over the network by unauthenticated attackers. While public exploit details are limited and it's not listed in the Known Exploited Vulnerabilities (KEV) catalog, its potential for widespread impact on internet-facing web services makes it a significant concern. Halo classifies this CVE as 'Likely' to be targeted due to its common deployment in internet-facing web services.

What are the practical steps to respond to CVE-2025-70023?

Given the critical nature of CVE-2025-70023, immediate action is recommended. Assess your environment for any use of transloadit uppy v0.25.6, especially in internet-facing applications. Consider isolating or taking affected services offline as a precautionary measure. Monitor network traffic for any suspicious activity indicative of compromise. Once available, apply any patches or security updates released by the vendor.

References