Preliminary research

Transformers: Dark Side of the Type — Weaponizing the Conversion Layer

Oleksandr Mirosh · i.blackhat.com

AI-collected research leads through 22 September 2026, including targeted additions between broader sweeps. Unranked, incomplete, not community-vetted, and subject to change.

No serializer is needed for object injection: any conversion that resolves a type named in input and builds it is a sink. ResXFileRef's converter takes filename;typename;encoding, opens a UNC path and constructs ResourceSet, reaching BinaryFormatter; ImageSourceConverter turns any string into a fetched URI; ObjectDataProvider's setters reach InvokeMember. SharePoint CVE-2020-1460 and CVE-2026-47294 chain it, the latter smuggling a type as a generic argument past SafeControl.

Record

Researcher

Oleksandr Mirosh

Published by

i.blackhat.com

Format

Whitepaper

Topic

Other

In the archive

• Collected in the 2026 preliminary research sweep

Related sources

• Transformers: Dark Side of the Type — Weaponizing the Conversion Layer (Slides) Whitepaper

Tags

• deserialization
• dotnet
• gadget-chain
• rce
• aspnet
• ssrf
• cve
• filter-bypass
• static-analysis
• owasp-a05-2021
• owasp-a08-2021
• owasp-a10-2021

This page is the archive's own catalogue record. The research is the work of Oleksandr Mirosh, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on 14 August 2026.