Answer in brief
CVE-2025-62593 records a High severity vulnerability in Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack. The current sources mark it as known exploited. The current feed maps ray-project/ray (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ray-project/ray (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ray-project/raygeneric | < 2.52.0 | Not reported |
Published upstream
Nov 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
Added to CISA KEV
Aug 18, 2026
Evidence: source:kev:kev:kev:recordRay 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-62593 records a High severity vulnerability in Ray is vulnerable to RCE via Safari & Firefox Browsers through DNS Rebinding Attack. The current sources mark it as known exploited. The current feed maps ray-project/ray (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ray-project/ray (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ray-project/raygeneric | < 2.52.0 | Not reported |
Published upstream
Nov 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
Added to CISA KEV
Aug 18, 2026
Evidence: source:kev:kev:kev:recordRay 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.
Quoted source text, attributed separately from HOL analysis.