What is CVE-2026-52782?

CVE-2026-52782 is a critical-severity vulnerability in Opf Openproject, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.9/10. Published 2026-06-26.

How severe is CVE-2026-52782?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Opf Openproject

CVE-2026-52782

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through /projects/<A>/settings/project_storages/<A_ps_id> via PATCH parameter "storages_project_storage[project_folder_id]" lea…

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Opf Openproject — versions < 17.3.3, >= 17.4.0, < 17.4.1

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-52782?: CVE-2026-52782 is a critical-severity vulnerability in Opf Openproject, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.9/10. Published 2026-06-26.
How severe is CVE-2026-52782?: Critical severity. CVSS v3 base score is 9.9 out of 10.