PT-2026-30977 · Genealogy · Genealogy

Across-Verticals-Malaysia + 1 · CVE-2026-39355 · Published 2026-04-07 · Updated 2026-04-07

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Genealogy versions prior to 5.9.1

Description The Genealogy PHP application contains a broken access control issue. An authenticated user can transfer ownership of any non-personal team to themselves, leading to complete takeover of other users’ team workspaces and unrestricted access to associated genealogy data. The vulnerable function is TeamController::transferOwnership(), which lacks proper authorization checks. This is triggered by a single POST request.

Recommendations Update to version 5.9.1 or later.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-39355

GHSA-2RQ7-JQM7-W8X4

Affected Products

Genealogy

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39355.json · Exploit
• 🔥 https://github.com/MGeurts/genealogy/security/advisories/GHSA-2rq7-jqm7-w8x4 · Exploit
• https://osv.dev/vulnerability/CVE-2026-39355 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-39355 · Security Note
• https://twitter.com/CveFindCom/status/2041602616468091294 · Twitter Post
• https://twitter.com/CVEnew/status/2041603152076497040 · Twitter Post
• https://twitter.com/0dayPublishing/status/2041594244947734896 · Twitter Post