CVE-2025-62593
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-26

Last updated on: 2025-11-26

Assigner: GitHub, Inc.

Description
Ray is an AI compute engine. Prior to version 2.52.0, developers working with Ray as a development tool can be exploited via a critical RCE vulnerability exploitable via Firefox and Safari. This vulnerability is due to an insufficient guard against browser-based attacks, as the current defense uses the User-Agent header starting with the string "Mozilla" as a defense mechanism. This defense is insufficient as the fetch specification allows the User-Agent header to be modified. Combined with a DNS rebinding attack against the browser, and this vulnerability is exploitable against a developer running Ray who inadvertently visits a malicious website, or is served a malicious advertisement (malvertising). This issue has been patched in version 2.52.0.
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Meta Information
Published
2025-11-26
Last Modified
2025-11-26
Generated
2026-06-16
AI Q&A
2025-11-27
EPSS Evaluated
2026-06-14
NVD
CVE-2025-62593
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
ray ray *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Executive Summary

This vulnerability affects Ray, an AI compute engine, prior to version 2.52.0. It is a critical remote code execution (RCE) vulnerability that can be exploited via Firefox and Safari browsers. The issue arises because Ray's defense mechanism relies on the User-Agent header starting with "Mozilla" to block attacks, but this is insufficient since the fetch specification allows modification of the User-Agent header. When combined with a DNS rebinding attack, a developer running Ray who visits a malicious website or is served a malicious advertisement can have their system exploited remotely. The vulnerability has been fixed in version 2.52.0.

Impact Analysis

This vulnerability can lead to critical remote code execution on a developer's system running Ray if they visit a malicious website or encounter malvertising. This means an attacker could execute arbitrary code remotely, potentially compromising the developer's system, stealing data, or causing other malicious effects.

Mitigation Strategies

Upgrade Ray to version 2.52.0 or later, as this version contains the patch for the critical RCE vulnerability. Additionally, avoid visiting untrusted websites or interacting with potentially malicious advertisements while using Ray as a development tool.

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