What is CVE-2025-59955?

CVE-2025-59955 is a medium-severity vulnerability in Coollabs Coolify, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.7/10. Published 2026-01-05.

How severe is CVE-2025-59955?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Coollabs Coolify

CVE-2025-59955

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Coolify versions prior to and including v4.0.0-beta.420.8 have an information disclosure vulnerability in the `/api/v1/teams/{team_id}/members` and `/api/v1/teams/current/members` API endpoints allows authenticated team members to access a highly sensitive `email_change_code` from other users on the same team. This code is intended for a single-use email change verification and should be kept secret. Its exposure could enable a malicious actor to perform an unauthorized email address change on behalf of the victim. As of time of publication, no known patched versions exist.

EPSS: 0.003 (21.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

Affected products

Coollabs Coolify — versions 4.0.0
Coollabsio Coolify — versions <= 4.0.0-beta.428

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59955?: CVE-2025-59955 is a medium-severity vulnerability in Coollabs Coolify, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.7/10. Published 2026-01-05.
How severe is CVE-2025-59955?: Medium severity. CVSS v3 base score is 5.7 out of 10.