CVE-2026-47193: OpenProject: Journal diff endpoint bypasses object, journal, and field visibility checks

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-26 · updated 2026-10-25
Weakness: CWE-200

Description

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the journal diff endpoint discloses hidden historical field values without enforcing object and field visibility. This vulnerability is fixed in 17.3.3 and 17.4.1.

Affected products

opf openproject: before 17.3.3; from 17.4.0, < 17.4.1

References

https://github.com/opf/openproject/security/advisories/GHSA-f2rx-x2qj-2hgj
https://github.com/opf/openproject/security/advisories/GHSA-f2rx-x2qj-2hgj

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