CVE-2025-62593

CRITICAL EXPLOITED

Ray < 2.52.0 - Remote Code Execution via DNS Rebinding and User-Agent Spoofing

Title source: llm

Exploitation Summary

CVE-2025-62593 has been observed exploited in the wild (reported by VulnCheck KEV).

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.

References (2)

Core 2

Core References

Vendor Advisory x_refsource_confirm

https://github.com/ray-project/ray/security/advisories/GHSA-q279-jhrf-cc6v

Patch x_refsource_misc

https://github.com/ray-project/ray/commit/70e7c72780bdec075dba6cad1afe0832772bfe09

View Patch ZIP pw:eip

Scores

CVSS v4 9.4

EPSS 0.0034

EPSS Percentile 26.7%

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

VulnCheck KEV 2026-03-11

CWE

CWE-352 CWE-94

Status published

Products (2)

pypi/ray 0 - 2.52.0PyPI

ray-project/ray < 2.52.0

Published Nov 26, 2025

Tracked Since Feb 18, 2026