CVE-2026-67528

mediumCVSS 4.3covered by 1 sourcefirst seen 2026-07-30

OpenProject is open-source, web-based project management software. Prior to 17.6.0, GET /api/v3/custom_options/:id resolved CustomOption records by global numeric id and allowed UserCustomField and GroupCustomField options without checking visible(current_user), so authenticated non-admin users could enumerate sequential custom option ids and read labels belonging to admin_only user or group custom fields. This issue is fixed in 17.6.0.

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Exploitation outlook

Low exploitation risk0.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-67528: OpenProject is open-source, web-based project management software. Prior to 17.6.0, GET /api/v…nvd · 2026-07-30

External references

NVD record for CVE-2026-67528

CVE.org record

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