How severe is CVE-2025-52186?

CVE-2025-52186 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2025-52186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52186?

CVE-2025-52186 affects Lichess Lila. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52186?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-52186 have an EU (EUVD) identifier?

Yes. CVE-2025-52186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175319.

When was CVE-2025-52186 published?

CVE-2025-52186 was published on 2025-11-13 and last updated on 2026-06-17.

CVE-2025-52186

CVE-2025-52186 is a medium-severity vulnerability in Lichess Lila with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-175319
Weakness: CWE-918
Affected product: Lichess Lila
Published: 2025-11-13
Last modified: 2026-06-17

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

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
How severe is CVE-2025-52186?: CVE-2025-52186 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2025-52186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52186?: CVE-2025-52186 affects Lichess Lila. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52186 have an EU (EUVD) identifier?: Yes. CVE-2025-52186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175319.
When was CVE-2025-52186 published?: CVE-2025-52186 was published on 2025-11-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lichess:lila:*:*:*:*:*:*:*:*

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