{"id":"CVE-2025-34351","aliases":["GHSA-gx77-xgc2-4888","PYSEC-2026-518"],"title":"Ray's New Token Authentication is Disabled By Default","summary":"Ray's New Token Authentication is Disabled By Default","severity":"critical","vendor":"ray","product":"ray","ecosystem":"pip","affected":["ray <= 2.52.0"],"published":"2025-11-27","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:31.048877822Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-gx77-xgc2-4888","references":[{"url":"https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-w8vc-465m-jjw6"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-34351"},{"url":"https://docs.ray.io/en/latest/ray-security/token-auth.html"},{"url":"https://github.com/ray-project/ray"},{"url":"https://github.com/ray-project/ray/releases/tag/ray-2.52.0"},{"url":"https://www.cve.org/resourcessupport/allresources/cnarules#section_4-1_Vulnerability_Determination"},{"url":"https://www.linkedin.com/posts/jonathan-leitschuh_the-latest-piece-of-mind-bending-research-activity-7396976425997606912-qizE"},{"url":"https://www.oligo.security/blog/shadowray-2-0-attackers-turn-ai-against-itself-in-global-campaign-that-hijacks-ai-into-self-propagating-botnet"},{"url":"https://www.oligo.security/blog/shadowray-attack-ai-workloads-actively-exploited-in-the-wild"},{"url":"https://www.vulncheck.com/advisories/anyscale-ray-token-authentication-disabled-by-default-insecure-configuration"}],"tags":["osv","pip"],"ingestedAt":"2026-09-12T03:13:01.697Z","slug":"CVE-2025-34351","body":"## Overview\n\nAnyscale Ray 2.52.0 contains an insecure default configuration in which token-based authentication for Ray management interfaces (including the dashboard and Jobs API) is disabled unless explicitly enabled by setting RAY_AUTH_MODE=token. In the default unauthenticated state, a remote attacker with network access to these interfaces can submit jobs and execute arbitrary code on the Ray cluster. NOTE: The vendor plans to enable token authentication by default in a future release. They recommend enabling token authentication to protect your cluster from unauthorized access.\n\n## Affected packages\n\n- `ray <= 2.52.0`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":52.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}