Vulnerability · Published Aug 20, 2026 · Assigned by GitHub_M

CVE-2026-55095OpenProject: Inplace-edit dialog exposes comments from hidden admin-only project custom fields

Medium 5.3

In plain English

A medium-severity missing authorization in openproject from opf. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.4%top 66.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenProject is open-source, web-based project management software. In version 17.5.1 and earlier, an authenticated non-admin project member can request the inplace-edit dialog for a raw custom_field_ project attribute. The dialog path resolves the project custom field by its raw identifier without enforcing the normal admin_only visibility scope and renders the stored custom-field comment in read-only mode. This discloses hidden comment text but does not disclose the custom-field value or permit writes or mutation. This issue is reported as fixed in version 17.6.0.

Affected products (as reported)

Vendor	Product	Versions
opf	openproject	< 17.6.0

Weakness: CWE-862 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/opf/openproject/security/advisories/GHSA-63fg-pgqj-3qf8 x_refsource_CONFIRM
https://github.com/opf/openproject/releases/tag/v17.6.0 x_refsource_MISC