TI-2026-18166 Aliases CVE-2026-22605

OpenProject is Vulnerable to Insecure Direct Object Reference in Meetings

LOW 19CWE-284Published 2026-01-10 · Updated 2026-01-12

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

OpenProject is an open-source, web-based project management software. OpenProject versions prior to version 16.6.3, allowed users with the View Meetings permission on any project, to access meeting details of meetings that belonged to projects, the user does not have access to. This issue has been patched in version 16.6.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00229 13th percentileScored 2026-11-07

Fix Fixed openproject (opf): 16.6.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
opf	openproject	before 16.6.3	16.6.3	Patch available	CNA

openproject Vendoropf Affected before 16.6.3 Fixed in 16.6.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openproject:openproject::::::::	before 16.6.3	Vulnerable	opf

cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:* Versions before 16.6.3 Vulnerable ·opf

Remediation

Fix · CNA openproject (opf) Fixed in 16.6.3

Timeline

2026-10-02 Threatist record created from CVE-2026-22605

References

Patch 1

https://github.com/opf/openproject/security/advisories/GHSA-fq4m-pxvm-8x2j

Other 1

https://github.com/opf/openproject/releases/tag/v16.6.3

TI-2019-08673 A SQL injection vulnerability in the activities API in OpenProject before 8.3.2 allows a… CVSS 3.0HIGH 8.1
TI-2026-26047 OpenProject: 2FA OTP Verification Missing Rate Limiting CVSS 3.1HIGH 7.4
TI-2026-29552 OpenProject has Cross-Project Meeting Agenda Item Injection via Unscoped Section Lookup CVSS 3.1HIGH 7.1
TI-2023-14850 OpenProject user sessions not terminated after activation of 2FA CVSS 3.1MEDIUM 6.5
TI-2026-18162 OpenProject is Vulnerable to Code Execution in E-Mail function CVSS 4.0HIGH 8.6
TI-2026-26961 OpenProject: SQL Injection in Cost Reporting =n Operator via parse_number_string CVSS 3.1CRITICAL 9.9

See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences