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Tag: Insecure Deserialization

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Insecure Deserialization

Insecure Deserialization is a vulnerability in which deserializing untrusted data allows unintended object creation or execution of processing.

In CTFs, challenges may involve supplying crafted serialized data as input to achieve arbitrary code execution or obtain sensitive information. (automatically translated from Japanese)

minaminao
·Updated Apr 24, 2026
Insecure Deserialization Challenges
Pickle Loader
minaminao

minaminao

Misc
122 solves
Resume Maker
tchen

tchen

Web
55 solves
Bulk Note
tchen

tchen

Web
Misc
27 solves

Bulk Note

Daily AlpacaHack B-SIDETopic: YAMLReleased: Apr 22, 2026

27 solves
WebMisc

by

tchen

tchen

I made a note app than can create multiple notes! Can you read the hidden note?

bulk-note.tar.gz
descriptionsolveswriteups