CVE-2025-62593Known exploitationPublic exploitNetwork attack vector

Remote code execution via bypassed browser-request guard

Published Nov 26, 2025 · Updated Aug 18, 2026

Code injection in Anyscale Ray before 2.52.0 allows remote attackers to execute arbitrary code through browser-based DNS rebinding. The dashboard middleware treats only User-Agent values starting with Mozilla as browser traffic, while Firefox and Safari fetch requests can override that header and reach the unauthenticated Jobs API. A developer must run the dashboard and visit attacker-controlled content; successful requests submit a job entrypoint that runs with Ray's host privileges.

CVSS severity9.4
Critical
EPSS probability16.89%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Anyscale Ray before 2.52.0 allows remote attackers to execute arbitrary code through browser-based DNS rebinding. The dashboard middleware treats only User-Agent values starting with Mozilla as browser traffic, while Firefox and Safari fetch requests can override that header and reach the unauthenticated Jobs API. A developer must run the dashboard and visit attacker-controlled content; successful requests submit a job entrypoint that runs with Ray's host privileges.

The record

CVE
CVE-2025-62593
Published
Nov 26, 2025
Updated
Aug 18, 2026
Vendor
Anyscale
Product
Ray
Classifications
CWE-352, CWE-94, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 2026Exploitation reportedCISA Known Exploited Vulnerabilities listing
  3. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.52.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anyscale · Rayversion=< 2.52.0

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.4GitHubCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CWE-94Improper Control of Generation of Code ('Code Injection')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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