Collected research

CoCo: Efficient Browser Extension Vulnerability Detection via Coverage-guided, Concurrent Abstract Interpretation

Jianjia Yu, Song Li, Junmin Zhu and Yinzhi Cao · yinzhicao.org

CoCo interprets a browser extension abstractly but concurrently, one thread per branch, callback and message channel, scheduled to maximise code coverage, so it resolves dynamic JavaScript lookups prior tools missed. It found 43 zero-day flaws letting a web page message an extension to run code, send cross-origin AJAX bypassing SOP, download files, or read cookies, history and bookmarks.

Record

Researcher

Jianjia Yu, Song Li, Junmin Zhu and Yinzhi Cao

Published by

yinzhicao.org

Format

Whitepaper

Topic

Browser

In the archive

• Collected in the 2023 research round

Tags

• browser-extension
• privilege-escalation
• sop-bypass
• postmessage
• static-analysis
• javascript
• info-leak
• tooling
• large-scale-scan
• owasp-a01-2021

This page is the archive's own catalogue record. The research is the work of Jianjia Yu, Song Li, Junmin Zhu and Yinzhi Cao, 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.