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Ray-Project Ray Code Injection Vulnerability

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.

MANARTECH SECURITY ALERT

Ray-Project Ray Code Injection Vulnerability

CVE Numbers

CVE-2025-62593

Affected Product

Ray — Ray-Project

Threat 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.

Severity Scale

CRITICALHIGHMEDIUMLOW

Severity

CRITICAL

Affected Versions

To be reviewed

Recommended Mitigation

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.

Reference Links


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


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


https://www.bitsight.com/blog/rondodox-botnet-infrastructure-analysis


https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62593


https://nvd.nist.gov/vuln/detail/CVE-2025-62593
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