August 17, 2026 · Applied Cybernetics Group
CVE-2025-62593 — Ray-Project Ray
Ray-Project Ray Code Injection Vulnerability
- Added to KEV
2026-08-17- Federal due date
2026-08-20- Vendor
- Ray-Project
- Product
- Ray
- EPSS
- 96.9th percentile (score 0.169, as of
2026-09-16) - NVD CVSS v3.1
- 8.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-62593
CISA short description
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.
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.
NVD 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.