What is CVE-2025-52186?

CVE-2025-52186 is a medium-severity vulnerability in Lichess Lila, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2025-11-13.

How severe is CVE-2025-52186?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Lichess Lila

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 withou…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Lichess Lila
N/a — versions n/a

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Broken Link)

Frequently asked questions

What is CVE-2025-52186?: CVE-2025-52186 is a medium-severity vulnerability in Lichess Lila, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2025-11-13.
How severe is CVE-2025-52186?: Medium severity. CVSS v3 base score is 6.5 out of 10.