Web - Server Web - Server

Discover the mechanisms, protocols and technologies used on the Internet and learn to abuse them!

These challenges are designed to train users on HTML, HTTP and other server side mechanisms. The following series of challenges will cultivate a better understanding of techniques such as : Basic workings of multiple authentication mechanisms, handling form data, inner workings of web applications, etc. ...

Prerequisites:
– Understand HTML.
– Understand the HTTP protocol.
– Ability to manipulate a web browser.

challenges 97 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution ↓↑ Date
pas_valide Ruby on Rails - ransack 1% 68 30 koma 0 23 June 2025
pas_valide Java - Custom gadget deserialization 1% 302 50 Elweth 0 28 December 2023
pas_valide Flask - Unsecure session 1% 3537 20 Sanlokii 1 29 November 2023
pas_valide Nginx - Root Location Misconfiguration 1% 2347 15 .Yo0x 1 27 September 2024
pas_valide File upload - Polyglot 1% 569 45 Cyxo 1 8 July 2022
pas_valide API - Broken Access 2 1% 732 40 Nishacid , Mika 1 18 January 2024
pas_valide GraphQL - Backend injection 1% 558 40 apges01 1 19 January 2023
pas_valide Nginx - SSRF Misconfiguration 1% 594 30 .Yo0x 1 27 September 2024
pas_valide NodeJS - Prototype Pollution Bypass 1% 625 45 Worty 1 22 October 2021
pas_valide Elixir - EEx 1% 443 35 lolo42 1 29 November 2023
pas_valide SQL Injection - Second Order 1% 290 55 k4ndar3c 1 29 November 2023
pas_valide Python - dotenv 1% 167 70 jrjgjk 1 27 September 2024
pas_valide Flask - Development server 1% 1329 30 Sanlokii 1 29 November 2023
pas_valide JWT - Header Injection 1% 1568 30 Nishacid , Mika 2 23 February 2023
pas_valide Yaml - Deserialization 1% 1600 35 Nishacid 2 20 April 2021
pas_valide GraphQL - Mutation 1% 1715 40 CanardMandarin 2 20 October 2020
pas_valide PHP - register globals 5% 16622 25 g0uZ 2 8 October 2011
pas_valide PHP - Eval - Advanced filters bypass 1% 712 40 Podalirius 2 8 July 2022
pas_valide API - Mass Assignment 2% 4100 20 Nishacid , Mika 2 18 January 2024
pas_valide XML External Entity 2% 5977 35 sambecks 2 20 October 2014
pas_valide Node - Serialize 1% 1464 35 Mhd_Root 2 24 February 2021
pas_valide SQL Truncation 2% 7216 35 Geluchat 2 1 May 2015
pas_valide PHP - Unserialize Pop Chain 1% 836 55 Worty 2 22 October 2021
pas_valide PHP - Unserialize overflow 1% 847 55 mayfly 2 4 April 2020
pas_valide LDAP injection - Blind 1% 3658 55 g0uZ 2 8 June 2013
pas_valide GraphQL - Injection 1% 1044 30 apges01 2 19 January 2023
pas_valide NodeJS - vm escape 1% 851 50 Podalirius 2 15 April 2021
pas_valide Directory traversal 10% 37079 25 g0uZ 3 31 July 2011
pas_valide Nginx - Alias Misconfiguration 2% 3937 15 .Yo0x 3 27 September 2024
pas_valide JWT - Unsecure File Signature 1% 2877 25 Nishacid , Mika 3 23 February 2023
pas_valide PHP - Serialization 2% 7103 35 Arod 3 3 February 2014
pas_valide PHP - Filters 6% 20647 25 g0uZ 3 27 February 2011
pas_valide SQL injection - File reading 2% 6305 40 Arod 3 19 October 2014
pas_valide File upload - ZIP 3% 10274 30 ghozt 3 3 August 2017
pas_valide Java - Spring Boot 1% 2470 40 dvor4x 3 24 December 2016
pas_valide PHP - preg_replace() 3% 9515 30 sambecks 4 2 March 2016
pas_valide Local File Inclusion 8% 26784 30 g0uZ 4 2 October 2011
pas_valide PHP - type juggling 3% 9297 30 vic 4 10 March 2016
pas_valide SQL injection - Authentication - GBK 3% 10495 30 dvor4x 4 2 December 2015
pas_valide Local File Inclusion - Double encoding 4% 13586 30 zM_ 4 13 June 2016
pas_valide PHP - Loose Comparison 3% 7706 30 ghozt 4 10 January 2018
pas_valide Local File Inclusion - Wrappers 2% 3938 40 sambecks 4 2 March 2016
pas_valide File upload - Null byte 7% 25195 25 g0uZ 4 26 December 2012
pas_valide API - Broken Access 2% 6876 15 Nishacid , Mika 4 18 January 2024
pas_valide SQL injection - Time based 2% 6169 45 ycam 4 11 September 2015
pas_valide XSS - Server Side 1% 3489 20 Elf 4 23 June 2023
pas_valide GraphQL - Introspection 2% 4568 20 apges01 4 19 January 2023
pas_valide SQL injection - Insert 1% 3375 40 sambecks 4 23 February 2015
pas_valide PHP - Apache configuration 1% 2895 25 erk3 , nemoz 4 8 July 2022
pas_valide PHP - Remote Xdebug 1% 1623 25 mayfly 4 18 March 2020
pas_valide SQL injection - Error 3% 8535 40 sambecks 5 4 March 2015
pas_valide JWT - Introduction 5% 18824 20 Kn0wledge 5 21 August 2019
pas_valide XPath injection - String 2% 4133 40 g0uZ 5 26 May 2013
pas_valide JWT - Public key 2% 4305 30 Jrmbt 5 21 August 2019
pas_valide XSLT - Code execution 2% 3973 30 ghozt 5 16 July 2017
pas_valide JWT - Unsecure Key Handling 1% 1033 35 Nishacid , Mika 5 23 February 2023
pas_valide Python - Blind SSTI Filters Bypass 1% 777 75 Podalirius 5 7 September 2021
pas_valide XPath injection - Blind 1% 2514 75 g0uZ 5 27 December 2012
pas_valide SQL Injection - Routed 2% 5788 35 soka 5 24 December 2016
pas_valide NoSQL injection - Blind 1% 3267 45 ghozt 6 26 November 2016
pas_valide XPath injection - Authentication 2% 6950 35 g0uZ 6 27 December 2012
pas_valide SQL injection - Blind 3% 8170 50 g0uZ 6 27 February 2011
pas_valide HTML - Source code 48% 178915 5 g0uZ 6 3 October 2006
pas_valide Insecure Code Management 4% 14723 20 Swissky 6 29 September 2019
pas_valide JWT - Revoked token 2% 6871 25 ArnC 6 20 March 2020
pas_valide Java - Server-side Template Injection 4% 11385 30 righettod 6 29 November 2015
pas_valide Command injection - Filter bypass 3% 8194 30 sambecks 6 20 September 2017
pas_valide PHP - Path Truncation 2% 5717 35 Geluchat 7 25 March 2015
pas_valide Weak password 31% 115238 10 g0uZ 7 3 October 2006
pas_valide HTTP - Directory indexing 22% 80979 15 g0uZ 7 7 October 2006
pas_valide Server Side Request Forgery 1% 2051 50 sambecks 7 22 June 2018
pas_valide Install files 13% 45752 15 g0uZ 7 7 October 2006
pas_valide CRLF 9% 32993 20 g0uZ 7 31 July 2011
pas_valide SQL injection - Numeric 5% 16041 35 g0uZ 7 24 December 2012
pas_valide SQL injection - Filter bypass 1% 3200 80 sambecks 7 21 July 2014
pas_valide Python - Server-side Template Injection Introduction 2% 5320 25 Podalirius 7 7 September 2021
pas_valide HTTP - Cookies 13% 47818 20 g0uZ 8 7 October 2006
pas_valide JWT - Weak secret 4% 13098 25 Jrmbt 8 21 August 2019
pas_valide Node - Eval 1% 3271 30 Mhd_Root 8 24 February 2021
pas_valide HTTP - IP restriction bypass 9% 33403 10 Cyrhades 8 23 March 2021
pas_valide Remote File Inclusion 4% 12439 30 g0uZ 8 25 November 2015
pas_valide NoSQL injection - Authentication 3% 8153 35 mastho 8 31 May 2015
pas_valide LDAP injection - Authentication 3% 10898 35 g0uZ 8 26 May 2013
pas_valide HTTP - Headers 16% 57434 15 Arod 9 11 January 2015
pas_valide HTTP - Open redirect 19% 70624 10 Swissky 10 2 August 2017
pas_valide HTTP - User-agent 24% 88567 10 g0uZ 10 3 October 2006
pas_valide PHP - Command injection 19% 70751 10 sambecks 10 20 September 2017
pas_valide Backup file 16% 56587 15 g0uZ 10 27 February 2011
pas_valide PHP - Eval 2% 3917 40 chmod 10 8 November 2018
pas_valide HTTP - POST 14% 52483 15 Th1b4ud 10 14 August 2018
pas_valide SQL injection - String 7% 23138 30 g0uZ 10 24 December 2012
pas_valide PHP - assert() 5% 16320 25 Birdy42 10 26 November 2016
pas_valide HTTP - Verb tampering 13% 48527 15 g0uZ 10 3 February 2011
pas_valide File upload - Double extensions 10% 36679 20 g0uZ 10 24 December 2012
pas_valide File upload - MIME type 8% 29604 20 g0uZ 10 26 December 2012
pas_valide HTTP - Improper redirect 12% 44700 15 Arod 10 26 November 2014
pas_valide SQL injection - Authentication 13% 48529 30 g0uZ 11 27 February 2011

Challenge Results Challenge Results

Pseudo Challenge Lang Date
yael Web - Serveur  HTML - Code source fr 10 November 2025 at 09:32
Manoa Web - Serveur  HTTP - POST fr 10 November 2025 at 09:31
Simon Cesar Web - Serveur  HTML - Code source fr 10 November 2025 at 09:30
ruth Web - Serveur  HTML - Code source fr 10 November 2025 at 09:26
Serkan Web - Serveur  SQL injection - En aveugle fr 10 November 2025 at 09:22
Doff Web - Serveur  HTML - Code source fr 10 November 2025 at 09:21
firezword Web - Serveur  HTTP - User-agent fr 10 November 2025 at 09:19
Ewenn Web - Serveur  HTML - Code source fr 10 November 2025 at 09:13
Youenn67 Web - Serveur  HTML - Code source fr 10 November 2025 at 09:13
kamy.prgt Web - Serveur  HTML - Code source fr 10 November 2025 at 09:11