CVE-2026-44736 | OpenProject is open-source, web-based project management sof… | CVSS 6.5 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.

Metadata

CVE ID: CVE-2026-44736
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-07 18:04 UTC
Published: 2026-06-26 19:27 UTC
Last updated: 2026-06-27 03:01 UTC
Primary CWE: CWE-200
CWE-200: Exposure of Sensitive Information to an Unauthorize…
Vendor / Product: opf / openproject
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
opf	openproject	—	< 17.4.0

Weakness (CWE)

CWE	Source	Description
CWE-200	cna	CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-639	cna	CWE-639: Authorization Bypass Through User-Controlled Key
CWE-836	cna	CWE-836: Use of Password Hash Instead of Password for Authentication

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References (1)

https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645 https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645