$ ctf42

#css-injection CTF challenges

8 CTF challenges using css-injection from 8 CTFs (2021–2025), 8 with writeups.

Web · 8

Often combined with

#csp-bypass 2 #data-exfiltration 2 #browser-extension 1 #html-injection 1 #xs-leak 1 #prototype-pollution 1 #web 1 #form-state-restoration 1 #bfcache 1

Challenges

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Challenge CTF Weight Category Has
styleme corCTF 2021 24.92 Web files wu 1
safestnote DiceCTF 2025 Quals 81.00 Web files wu 1
Flags Zh3r0 2021 – Web files wu 1
adversal WolvCTF 2023 24.33 Web files wu 1
pwnypass UIUCTF 2024 – Web files wu 1
Bench_Press Hack.lu 2024 100.00 Web files wu 1
markdown-plus-plus HSCTF 2022 – Web files wu 1
Stylish BCACTF 2021 – Web files wu 1