CVE-2025-52186Public exploitNetwork attack vector

Unauthenticated server-side requests via unvalidated players URL

Published Nov 13, 2025 · Updated Nov 13, 2025

SSRF in the game export API in Lichess lila before 2025-06-02 allows remote attackers to make server-side requests to arbitrary URLs. Game.scala accepts the players query value as playerFile, and GameApiV2 sends it to RealPlayerApi.apply without validating the destination. The export endpoint is remotely reachable without authentication, enabling requests to attacker-chosen external or internal HTTP resources.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in the game export API in Lichess lila before 2025-06-02 allows remote attackers to make server-side requests to arbitrary URLs. Game.scala accepts the players query value as playerFile, and GameApiV2 sends it to RealPlayerApi.apply without validating the destination. The export endpoint is remotely reachable without authentication, enabling requests to attacker-chosen external or internal HTTP resources.

The record

CVE
CVE-2025-52186
Published
Nov 13, 2025
Updated
Nov 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, CAPEC-664, T1090
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

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.

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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 exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1090Proxy

Public exploit references

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

Technologies

Your stack

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Your stack

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