CVE-2026-44736

Medium

Description

OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0.

SeverityMedium

CVSS6.5

Exploit probability—

ProductOpf Openproject

PublishedJun 26, 2026

First seenJun 26, 2026

Weakness typeCWE-200Sensitive information exposure CWE-639Authorization bypass through user-controlled key CWE-836CWE-836

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
opf openproject	< 17.4.0	—

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