CVE-2025-62593
Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack
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.
- Affected
- ray-project · ray
- CVSS v4.0 GITHUB
- 9.4 CRITICAL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 9.4 CRITICAL
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 - CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 62.46% chance of exploitation in the next 30 days, 99th percentile
- CISA KEV
- added 2026-08-17
- Nuclei
- critical · CWE-94
- Published
- 2025-11-26
- Updated
- 2026-10-01
Proof-of-concept exploits (2)
- advisories/GHSA-q279-jhrf-cc6v
- Boreas37/CVE-2025-62593-PoC2★ · 2026-08-18
Nuclei templates (1)
Security advisories
- ray-project/ray/security/advisories/GHSA-q279-jhrf-cc6v
- https://www.bitsight.com/blog/rondodox-botnet-infrastructure-analysis
- ray-project/ray/commit/70e7c72780bdec075dba6cad1afe0832772bfe09