What is CVE-2026-23646?

CVE-2026-23646 is a medium-severity vulnerability in Openproject, classified under CWE-488. CVSS score: 6.5/10. Published 2026-01-19.

How severe is CVE-2026-23646?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Openproject

CVE-2026-23646

OpenProject is an open-source, web-based project management software. Users of OpenProject versions prior to 16.6.5 and 17.0.1 have the ability to view and end their active sessions via Account Settings → Sessions. When deleting a session…

EPSS: 0.003 (23.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openproject — versions 17.0.0
Opf Openproject — versions < 16.6.5, = 17.0.0

Weakness classification (CWE)

CWE-488

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-23646?: CVE-2026-23646 is a medium-severity vulnerability in Openproject, classified under CWE-488. CVSS score: 6.5/10. Published 2026-01-19.
How severe is CVE-2026-23646?: Medium severity. CVSS v3 base score is 6.5 out of 10.