CVE-2026-23646: medium-severity vulnerability in opf openproject
OpenProject users can delete other user's session, causing them to be logged out
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
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, it was not properly checked if the session belongs to the user. As the ID that is used to identify these session objects use incremental integers, users could iterate requests using `DELETE /my/sessions/:id` and thus unauthenticate other users. Users did not have access to any sensitive information (like browser identifier, IP addresses, etc) of other users that are stored in the session. The problem was patched in OpenProject versions 16.6.5 and 17.0.1. No known workarounds are available as this does not require any permissions or other that can temporarily be disabled.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
opf · openprojectRelated CVEs — opf openproject
In the same product, most dangerous first.
CVE-2023-33960HIGHOpenProject vulnerable to project identifier information leakage through robots.txtEPSS 1.3%CVE-2021-43830HIGHSQL injection in OpenProjectEPSS 1.0%CVE-2021-32763MEDIUMRegular Expression Denial of Service in OpenProject forum messagesEPSS 0.9%CVE-2023-31140MEDIUMOpenProject user sessions not terminated after activation of 2FAEPSS 0.9%CVE-2026-25763CRITICALCommand Injection on OpenProject repositories leads to Remote Code ExecutionEPSS 0.5%CVE-2026-46386CRITICALOpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`EPSS 0.5%