CVE-2026-30239
Published: 11 March 2026
Summary
CVE-2026-30239 is a medium-severity Incorrect Authorization (CWE-863) vulnerability in Openproject Openproject. Its CVSS base score is 6.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 13.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and AC-6 (Least Privilege).
Deeper analysis
CVE-2026-30239 is an authorization bypass vulnerability (CWE-863) in OpenProject, an open-source web-based project management software. In versions prior to 17.2.0, the deletion of budgets triggers the reassignment or removal of associated work packages to another budget before performing the necessary permission checks on the delete action. This flaw enables unauthorized deletion of work package budget assignments. The vulnerability carries a CVSS v3.1 base score of 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N), indicating medium severity with high integrity impact.
An authenticated attacker with low-privilege access (PR:L), such as any valid user account in the OpenProject instance, can exploit this vulnerability remotely over the network with low complexity and no user interaction required. By initiating a budget deletion, the attacker can manipulate work package budget assignments without proper authorization, potentially disrupting project budgeting, financial tracking, or resource allocation within the affected instance.
The official advisory from the OpenProject GitHub Security Advisories (GHSA-gpvh-g967-g4h8) confirms the issue and states that it is fully resolved in version 17.2.0, where permission checks are enforced prior to any budget-related work package modifications. Security practitioners should upgrade to 17.2.0 or later and review user permissions on budget management features to mitigate exposure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-11237
Vulnerability details
OpenProject is an open-source, web-based project management software. Prior to 17.2.0, when budgets are deleted, the work packages that were assigned to this budget need to be moved to a different budget. This action was performed before the permission check…
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on the delete action was executed. This allowed all users in the application to delete work package budget assignments. This vulnerability is fixed in 17.2.0.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Authorization bypass (CWE-863) in public-facing web app allows low-priv authenticated user to perform unauthorized data modifications (budget assignment deletion/reassignment), directly enabling exploitation for privilege escalation and initial access via public-facing application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces authorization checks on budget deletion before any work-package reassignment occurs, blocking the exact bypass described.
Limits the set of privileges any authenticated user can hold, reducing the population able to reach the flawed code path.
Requires prompt application of the vendor patch (17.2.0) that moves the permission check before the delete action.