$ ctf42

Web CTF challenges

2,461 Web CTF challenges from 309 CTFs (2011–2026), 673 with writeups.

Top web techniques

#xss 70 #sql-injection 41 #ssti 30 #ssrf 26 #prototype-pollution 25 #path-traversal 25 #csp-bypass 23 #command-injection 21 #web 21 #filter-bypass 14 #xs-leak 14 #lfi 12 #rce 12 #race-condition 12 #css-injection 11

Challenges

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Challenge CTF Weight Has
Great_Management_Opener IERAE 2024 – files
Greetings 1337UP 2024 – files
Greyctf_Survey GreyCatTheFlag 2024 Quals – files
Guessy_CTF_Solver WorldWide 2024 – files
GymTok Hack.lu 2024 100.00 files
HTML_Personality_Analyzer IRON 2024 – files
HTTP_Fanatics UMDCTF 2024 – files
Hacked TCP1P 2024 89.85 files
Hacked_V2 TCP1P 2024 89.85 files
HackerCommunity Akasec 2024 23.15 files
HackerNickName Akasec 2024 23.15 files
Homelab_More_like_Pwnlab 4TS 2024 24.40 files
Hydrate_Today Hack.lu 2024 100.00 files
Im_not_the_CEO L3akCTF 2024 24.43 files
Im_the_CEO L3akCTF 2024 24.43 files
ImagikaTragicka HITCON 2024 Quals 100.00 files
Innocent_Image_Viewer HKUSTFirebird 2024 – files
InsoBank insomnihack 2024 Quals 32.00 files
Inspect_Element GPN 2024 – files
Intruder SekaiCTF 2024 36.96 files
JSLearning.com BCACTF 2024 – files
JSON_Store squ1rrel 2024 24.25 files
JSPyaml HKCERT 2024 Quals – files
JavaScrypto SECCON 2024 Quals – files
Javolution XCTF-DubheCTF 2024 – files
Jays_Bank UofTCTF 2024 23.90 files
Jinja_Master PwnSec 2024 – files
Juggernaut BackdoorCTF 2024 – files
Just_Wierd_Things BITSCTF 2024 – files
Just_a_day_at_the_breach BlueHens 2024 34.05 files
Katana AirOverflow 2024 25.00 files
Key_Server squ1rrel 2024 24.25 files
KibxakProxy CybHackCTF 2024 – files
KrySS2.0 L3akCTF 2024 24.43 files
LakeCDN LakeCTF 2024 Quals – files
LameNote IrisCTF 2024 24.59 files
Leak_Leak_Leak IERAE 2024 – files
Lets_buy_some_array CPCTF 2024 – files
Letters ASIS 2024 Quals 66.25 files
Letters justCTF 2024 Quals 77.17 files