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Vulnerability record · CVE-2026-39355 · published 7 April 2026

CVE-2026-39355: Kreaweb genealogy missing authorization vulnerability

Kreaweb · Genealogy

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces and unrestricted access to all genealogy data associated with the compromised team. This vulnerability is fixed in 5.9.1.

8.8 CVSS 3.1 High EPSS 0.44% · top 64.2% CWE-862 · Missing authorization
8.8CVSS 3.1 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
24 Jul 2026Last modified by NVD

Description

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces and unrestricted access to all genealogy data associated with the compromised team. This vulnerability is fixed in 5.9.1.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MGeurts/genealogy/security/advisories/GHSA-2rq7-jqm7-w8x4 ExploitVendor Advisory
https://github.com/MGeurts/genealogy/security/advisories/GHSA-2rq7-jqm7-w8x4 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-39355), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.