{"id":"CVE-2025-62593","aliases":["GHSA-q279-jhrf-cc6v","PYSEC-2026-520"],"url":"https://o3.security/vulnerability/CVE-2025-62593","summary":"Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack","details":"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.","published":"2025-11-26T22:28:28.577Z","modified":"2026-07-15T01:49:03.210117744Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"ray","fixedVersion":"2.52.0"}],"fix":{"url":"https://github.com/ray-project/ray/commit/70e7c72780bdec075dba6cad1afe0832772bfe09","label":"ray-project/ray@70e7c72"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62593.json"},{"type":"ADVISORY","url":"https://github.com/ray-project/ray/security/advisories/GHSA-q279-jhrf-cc6v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62593"},{"type":"FIX","url":"https://github.com/ray-project/ray/commit/70e7c72780bdec075dba6cad1afe0832772bfe09"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:03.210117744Z"}}