The Bottom Line: The European Euro-Office Consortium failed to achieve independence from Russian OnlyOffice code despite the 2026 fork and continued integrating its changes instead of developing its own.
According to a source code analysis by Cybernews, Euro-Office—marketed as a European Microsoft alternative—continues to rely heavily on code from Russia despite the March fork from OnlyOffice, contradicting the European Consortium’s goals of reducing dependencies on problematic third countries.
The European Consortium behind Euro-Office—consisting of Nextcloud, Ionos, Eurostack, Proton, XWiki, and OpenProject—announced a formal fork from OnlyOffice in March 2026 to develop the code independently and free from geopolitical dependencies. The rationale: OnlyOffice lacks transparency and trust, as many users and customers demand software that is not potentially influenced or controlled by the Russian government.
However, a Cybernews analysis ahead of the planned launch on June 9, 2026, reveals a different picture. According to statistical evaluation, 98.6 percent of the document engine and 99.2 percent of the live service component originated from developers in Russian time zones. European contributions account for only approximately 0.5 percent. Since the formal separation from OnlyOffice version 9.3.1 on March 5, 2026, the European development team integrated approximately 370 code changes from OnlyOffice authors into the server components while contributing only about 20 of its own changes. Of approximately 15,600 changes in the OnlyOffice source code analyzed, about 90 percent were made in the Moscow time zone; when including additional Russian time zones (Omsk, Yekaterinburg, Samara), this share rises to 99.5 percent.
Beyond code origin, analysts identified specific security deficiencies. An Android bundle in the software is obtained from an unknown cloud resource, whose content, ownership, and potential malleability remain unclear. This raises questions about network security and potential expansion of attack surfaces.
OnlyOffice responded to the allegations through its Chief Commercial Officer Galina Goduhina. The company emphasizes compliance with all EU laws and international regulations. Goduhina criticized the assessment of software based on developer nationality rather than quality and security. The distribution company Ascensio System is registered in Latvia, with beneficial owners based in Singapore.
Source: www.it-daily.net · Published June 11, 2026
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