# Ray's New Token Authentication is Disabled By Default

Advisory record · `GHSA-gx77-xgc2-4888`

- **Identifiers:** `GHSA-gx77-xgc2-4888` · `CVE-2025-34351` · `PYSEC-2026-518`
- **State:** Confirmed
- **Severity:** CVSS 4.0, no score published
- **Critical:** No
- **Weakness (CWE):** [CWE-304](https://cwe.mitre.org/data/definitions/304.html) · [CWE-1188](https://cwe.mitre.org/data/definitions/1188.html)
- **Tags:** [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md) · [CWE-1188](https://agentprime.io/advisories/tag/cwe-1188.md)
- **Published:** 27 Nov 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 27 Nov 2025, 03:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `ray` (PyPI): affected `<=2.52.0`; no fixed version yet

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Ray versions up to and including 2.52.0 have token authentication for the dashboard and Jobs API disabled by default. A remote attacker with network access to these interfaces can submit jobs and run arbitrary code on the cluster. No fixed version is listed; the vendor recommends setting RAY_AUTH_MODE=token to enable token authentication.

Written 5 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- Score not published, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 14:34 UTC: First seen by agentprime
- 31 Oct 2026, 14:34 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-gx77-xgc2-4888)

## Sources

- [GitHub Advisory Database: GHSA-gx77-xgc2-4888](https://github.com/advisories/GHSA-gx77-xgc2-4888)
- [OSV: GHSA-gx77-xgc2-4888](https://osv.dev/vulnerability/GHSA-gx77-xgc2-4888)
- <https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-w8vc-465m-jjw6>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-34351>
- <https://docs.ray.io/en/latest/ray-security/token-auth.html>
- <https://github.com/ray-project/ray>
- <https://github.com/ray-project/ray/releases/tag/ray-2.52.0>
- <https://www.cve.org/resourcessupport/allresources/cnarules#section_4-1_Vulnerability_Determination>
- <https://www.linkedin.com/posts/jonathan-leitschuh_the-latest-piece-of-mind-bending-research-activity-7396976425997606912-qizE>
- <https://www.oligo.security/blog/shadowray-2-0-attackers-turn-ai-against-itself-in-global-campaign-that-hijacks-ai-into-self-propagating-botnet>
- <https://www.oligo.security/blog/shadowray-attack-ai-workloads-actively-exploited-in-the-wild>
- <https://www.vulncheck.com/advisories/anyscale-ray-token-authentication-disabled-by-default-insecure-configuration>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-gx77-xgc2-4888>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-gx77-xgc2-4888/>. Everything for agents: <https://agentprime.io/llms.txt>.