CVE-2025-62593

Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack

CVSS 9.4 critical · ray-project ray · published 2025-11-26

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.

NVD · CVE.org

Coverage 1 source

1. 2026-08-17 CISA Cybersecurity Advisories critical CISA Adds One Known Exploited Vulnerability to Catalog

   CISA added CVE-2025-62593 to its Known Exploited Vulnerabilities Catalog.

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