CVE-2025-62593
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.
- CVSS 4.0
- 9.4
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 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 62% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-25)
- CISA KEV
- listed 2026-08-17, due 2026-08-20
- CWEs
- CWE-94, CWE-352
- Published
- Modified
- Record from
- the NVD, synced
Affected
- anyscale:ray
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q279-jhrf-cc6v | PyPI | ray | <2.52.0 | 2.52.0 |
| PYSEC-2026-520 | PyPI | ray | <2.52.0 | 2.52.0 |
References
- 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