What is CVE-2026-52783?

CVE-2026-52783 is a high-severity vulnerability in Opf Openproject, classified under Cleartext Storage in a File or on Disk. CVSS score: 8.2/10. Published 2026-06-26.

How severe is CVE-2026-52783?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Opf Openproject

CVE-2026-52783

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key st…

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

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

Weakness classification (CWE)

CWE-313 — Cleartext Storage in a File or on Disk

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-52783?: CVE-2026-52783 is a high-severity vulnerability in Opf Openproject, classified under Cleartext Storage in a File or on Disk. CVSS score: 8.2/10. Published 2026-06-26.
How severe is CVE-2026-52783?: High severity. CVSS v3 base score is 8.2 out of 10.