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: 2025-11-26
Score: 9.4 Critical
EPSS: 1.0% Low
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-q279-jhrf-cc6v Ray is vulnerable to Critical RCE via Safari & Firefox Browsers through DNS Rebinding Attack
History

Mon, 17 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Anyscale
Anyscale ray
CPEs cpe:2.3:a:anyscale:ray:*:*:*:*:*:*:*:*
Vendors & Products Anyscale
Anyscale ray

Mon, 17 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 17 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
References

Mon, 17 Aug 2026 14:00:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-08-18T00:00:00+00:00', 'dueDate': '2026-08-21T00:00:00+00:00'}


Mon, 01 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important


Fri, 28 Nov 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 27 Nov 2025 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Ray Project
Ray Project ray
Vendors & Products Ray Project
Ray Project ray

Wed, 26 Nov 2025 22:45:00 +0000

Type Values Removed Values Added
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.
Title Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack
Weaknesses CWE-352
CWE-94
References
Metrics cvssV4_0

{'score': 9.4, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-18T03:55:33.677Z

Reserved: 2025-10-16T19:24:37.266Z

Link: CVE-2025-62593

cve-icon Vulnrichment

Updated: 2025-11-28T18:22:05.838Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-26T23:15:47.927

Modified: 2026-08-18T04:16:40.860

Link: CVE-2025-62593

cve-icon Redhat

Severity : Important

Publid Date: 2025-11-26T22:28:28Z

Links: CVE-2025-62593 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-11-27T16:26:29Z

Weaknesses