What is CVE-2026-63101?

CVE-2026-63101 is a high-severity vulnerability in Fossasia Open-event-server, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-07-17.

How severe is CVE-2026-63101?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Fossasia Open-event-server

CVE-2026-63101

Open Event Server through 1.19.1 contains a missing authentication vulnerability that allows unauthenticated attackers to export the complete member roster of any group, including email addresses, names, join dates, and roles, by submittin…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Fossasia Open-event-server — versions 0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63101?: CVE-2026-63101 is a high-severity vulnerability in Fossasia Open-event-server, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-07-17.
How severe is CVE-2026-63101?: High severity. CVSS v3 base score is 7.5 out of 10.