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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| ray-project | ray | < 2.52.0 |
References
- https://github.com/ray-project/ray/commit/70e7c72780bdec075dba6cad1afe0832772bfe09Patch
- https://github.com/ray-project/ray/security/advisories/GHSA-q279-jhrf-cc6vExploit, Patch, Vendor Advisory
- https://www.bitsight.com/blog/rondodox-botnet-infrastructure-analysisThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62593US Government Resource
Timeline
- Published
- Nov 26, 2025
- Last modified
- Oct 19, 2026
- Added to CISA KEV
- Aug 17, 2026
- NVD status
- Analyzed