CVE-2025-52186: lila SSRF — Exploit

Description

Lichess lila before commit 11b4c0fb00f0ffd823246f839627005459c8f05c (2025-06-02) contains a Server-Side Request Forgery (SSRF) vulnerability in the game export API. The players parameter is passed directly to an internal HTTP client without validation, allowing remote attackers to force the server to send HTTP requests to arbitrary URLs

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Vendor	Product	Versions
lichess	lila	< 2025-06-02

References

Exploits

https://hackerone.com/reports/3165242

Other References

https://github.com/lichess-org/lila/commit/11b4c0fb00f0ffd8232346f839627005459c8f05c

Frequently Asked Questions

What is CVE-2025-52186? +

Lichess lila before commit 11b4c0fb00f0ffd823246f839627005459c8f05c (2025-06-02) contains a Server-Side Request Forgery (SSRF) vulnerability in the game export API. The players parameter is passed directly to an internal HTTP client without validation, allowing remote attackers to force the server to send HTTP requests to arbitrary URLs It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-52186? +

CVE-2025-52186 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-52186? +

CVE-2025-52186 affects products from lichess, specifically: lila. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-52186? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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