Author

Christoph Csallner

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Jul 2026

ZIMPAF & RedPhuzz: High-fidelity Web Application Fuzzing via Branch, Language Construct, and Function Call Monitoring

We present ZIMPAF, runtime interpreter instrumentation, and RedPhuzz, a fuzzer, to address key limitations of state-of-the-art fuzzers: inefficient instrumentation, the lack of knowledge of the execution environment, and limited web domain knowledge. ZIMPAF implements a novel multi-granular runtime interpreter instrume...

Tennov Simanjuntak, Christoph Csallner · arXiv.org · 0 citations

Jul 2026

Toward Inferring Accurate Context-free Grammars for Big Languages in a Black-box Setting

In an empirical comparison that avoids several pitfalls of recent studies, XVada improves on the highest-scoring competitor (TreeVada) both in grammar accuracy and grammar compactness and finds a CVE in the widely used Python Liquid engine.

Mohammad Rifat Arefin, Nuhiat Arefin, Shanto Rahman et al. · arXiv.org · 0 citations