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CVE-2025-62593

Ray-Project Ray Code Injection Vulnerability

Ray-Project Ray CWE-94

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.

CVSS Score
9.4
Critical
EPSS — Exploit Probability
62%
Riskier than 99% of all CVEs · checked 2026-10-01
Exploitation
Confirmed in the wild
KEV since 2026-08-17
Remediation
Patch available
Federal deadline 2026-08-20
CISA 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. Deadline for federal agencies: 2026-08-20.

NVD entry Vendor patch PoC / advisory CISA KEV

4 articles across 4 outlets · first covered Aug 17, 2026 · latest Aug 18, 2026

Coverage timeline