Actively exploitedCVSS 8.8 · HIGH

CVE-2025-62593RCE in Ray via DNS rebinding and browser-based attacks

Ray-Project Ray contains a code injection vulnerability that could allow remote code execution. Developers using Ray as a development tool may be exposed to this vulnerability exploitable through Firefox and Safari.

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Analysis

Ray, el motor de cómputo para IA, presenta una vulnerabilidad de ejecución remota de código (RCE) que está siendo explotada activamente en entornos de desarrollo. Los atacantes pueden ejecutar comandos en la máquina del desarrollador mediante ataques de DNS rebinding si este visita un sitio web malicioso usando Firefox o Safari. Se recomienda actualizar inmediatamente a la versión 2.52.0 para corregir esta falla en el manejo de peticiones del navegador.

Relevant roles

PythonIADataScienceMachineLearningBackendCyberSecurity

Severity

Score: 8.8(HIGH)

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

AV: NETWORK

AC: LOW

PR: NONE

UI: REQUIRED

S: UNCHANGED

C: HIGH

I: HIGH

A: HIGH

Weakness (CWE): CWE-94CWE-352

CISA KEV

Added to KEV: 2026-08-17

Federal patch deadline: 2026-08-20

Known ransomware use: Unknown

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

EPSS

Probability of exploitation (next 30 days): 0.0037 (0.4%)

Percentile: 29.9%

EPSS: 2026-08-17

Affects

anyscale:ray

Technical 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.

Published: 11/26/2025, 11:15:47 PM

Last modified: 8/17/2026, 6:16:32 PM

References

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.