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% 45 30 koma 0 23 June 2025
pas_valide Nginx - Alias Misconfiguration 1% 3217 15 .Yo0x 3 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 1487 15 .Yo0x 1 27 September 2024
pas_valide Nginx - SSRF Misconfiguration 1% 348 30 .Yo0x 1 27 September 2024
pas_valide Python - dotenv 1% 120 70 jrjgjk 1 27 September 2024
pas_valide API - Broken Access 2 1% 628 40 Nishacid , Mika 1 18 January 2024
pas_valide API - Mass Assignment 1% 3606 20 Nishacid , Mika 2 18 January 2024
pas_valide API - Broken Access 2% 5911 15 Nishacid , Mika 4 18 January 2024
pas_valide Java - Custom gadget deserialization 1% 242 50 Elweth 0 28 December 2023
pas_valide Flask - Unsecure session 1% 3172 20 Sanlokii 1 29 November 2023
pas_valide Elixir - EEx 1% 381 35 lolo42 1 29 November 2023
pas_valide Flask - Development server 1% 1202 30 Sanlokii 1 29 November 2023
pas_valide SQL Injection - Second Order 1% 260 55 k4ndar3c 1 29 November 2023
pas_valide XSS - Server Side 1% 3169 20 Elf 4 23 June 2023
pas_valide JWT - Unsecure Key Handling 1% 937 35 Nishacid , Mika 5 23 February 2023
pas_valide JWT - Header Injection 1% 1418 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Unsecure File Signature 1% 2624 25 Nishacid , Mika 3 23 February 2023
pas_valide GraphQL - Backend injection 1% 499 40 apges01 1 19 January 2023
pas_valide GraphQL - Injection 1% 920 30 apges01 2 19 January 2023
pas_valide GraphQL - Introspection 2% 4210 20 apges01 4 19 January 2023
pas_valide File upload - Polyglot 1% 526 45 Cyxo 1 8 July 2022
pas_valide PHP - Eval - Advanced filters bypass 1% 668 40 Podalirius 2 8 July 2022
pas_valide PHP - Apache configuration 1% 2727 25 erk3 , nemoz 4 8 July 2022
pas_valide PHP - Unserialize Pop Chain 1% 771 55 Worty 2 22 October 2021
pas_valide NodeJS - Prototype Pollution Bypass 1% 600 45 Worty 1 22 October 2021
pas_valide Python - Blind SSTI Filters Bypass 1% 726 75 Podalirius 5 7 September 2021
pas_valide Python - Server-side Template Injection Introduction 2% 4996 25 Podalirius 7 7 September 2021
pas_valide Yaml - Deserialization 1% 1535 35 Nishacid 2 20 April 2021
pas_valide NodeJS - vm escape 1% 810 50 Podalirius 1 15 April 2021
pas_valide HTTP - IP restriction bypass 9% 31609 10 Cyrhades 8 23 March 2021
pas_valide Node - Serialize 1% 1395 35 Mhd_Root 2 24 February 2021
pas_valide Node - Eval 1% 3135 30 Mhd_Root 7 24 February 2021
pas_valide GraphQL - Mutation 1% 1651 40 CanardMandarin 2 20 October 2020
pas_valide PHP - Unserialize overflow 1% 819 55 mayfly 2 4 April 2020
pas_valide JWT - Revoked token 2% 6565 25 ArnC 6 20 March 2020
pas_valide PHP - Remote Xdebug 1% 1573 25 mayfly 4 18 March 2020
pas_valide Insecure Code Management 4% 14382 20 Swissky 6 29 September 2019
pas_valide JWT - Introduction 5% 18257 20 Kn0wledge 5 21 August 2019
pas_valide JWT - Weak secret 4% 12691 25 Jrmbt 7 21 August 2019
pas_valide JWT - Public key 2% 4120 30 Jrmbt 5 21 August 2019
pas_valide PHP - Eval 2% 3794 40 chmod 10 8 November 2018
pas_valide HTTP - POST 14% 51261 15 Th1b4ud 10 14 August 2018
pas_valide Server Side Request Forgery 1% 1995 50 sambecks 7 22 June 2018
pas_valide PHP - Loose Comparison 3% 7546 30 ghozt 4 10 January 2018
pas_valide Command injection - Filter bypass 3% 7960 30 sambecks 6 20 September 2017
pas_valide PHP - Command injection 19% 69136 10 sambecks 10 20 September 2017
pas_valide File upload - ZIP 3% 10018 30 ghozt 3 3 August 2017
pas_valide HTTP - Open redirect 19% 69022 10 Swissky 10 2 August 2017
pas_valide XSLT - Code execution 2% 3875 30 ghozt 5 16 July 2017
pas_valide Java - Spring Boot 1% 2422 40 dvor4x 3 24 December 2016
pas_valide SQL Injection - Routed 2% 5641 35 soka 5 24 December 2016
pas_valide NoSQL injection - Blind 1% 3162 45 ghozt 6 26 November 2016
pas_valide PHP - assert() 5% 16022 25 Birdy42 10 26 November 2016
pas_valide Local File Inclusion - Double encoding 4% 13281 30 zM_ 4 13 June 2016
pas_valide PHP - type juggling 3% 9140 30 vic 4 10 March 2016
pas_valide Local File Inclusion - Wrappers 2% 3815 40 sambecks 4 2 March 2016
pas_valide PHP - preg_replace() 3% 9353 30 sambecks 4 2 March 2016
pas_valide SQL injection - Authentication - GBK 3% 10249 30 dvor4x 4 2 December 2015
pas_valide Java - Server-side Template Injection 4% 11115 30 righettod 6 29 November 2015
pas_valide Remote File Inclusion 4% 12192 30 g0uZ 8 25 November 2015
pas_valide SQL injection - Time based 2% 6046 45 ycam 4 11 September 2015
pas_valide NoSQL injection - Authentication 3% 7992 35 mastho 8 31 May 2015
pas_valide SQL Truncation 2% 7027 35 Geluchat 2 1 May 2015
pas_valide PHP - Path Truncation 2% 5601 35 Geluchat 6 25 March 2015
pas_valide SQL injection - Error 3% 8304 40 sambecks 5 4 March 2015
pas_valide SQL injection - Insert 1% 3305 40 sambecks 4 23 February 2015
pas_valide HTTP - Headers 16% 56342 15 Arod 9 11 January 2015
pas_valide HTTP - Improper redirect 12% 43873 15 Arod 10 26 November 2014
pas_valide XML External Entity 2% 5846 35 sambecks 2 20 October 2014
pas_valide SQL injection - File reading 2% 6097 40 Arod 3 19 October 2014
pas_valide SQL injection - Filter bypass 1% 3095 80 sambecks 7 21 July 2014
pas_valide PHP - Serialization 2% 6957 35 Arod 3 3 February 2014
pas_valide LDAP injection - Blind 1% 3579 55 g0uZ 2 8 June 2013
pas_valide LDAP injection - Authentication 3% 10699 35 g0uZ 8 26 May 2013
pas_valide XPath injection - String 2% 4067 40 g0uZ 5 26 May 2013
pas_valide XPath injection - Blind 1% 2468 75 g0uZ 5 27 December 2012
pas_valide XPath injection - Authentication 2% 6837 35 g0uZ 6 27 December 2012
pas_valide File upload - Null byte 7% 24716 25 g0uZ 4 26 December 2012
pas_valide File upload - MIME type 8% 29051 20 g0uZ 10 26 December 2012
pas_valide SQL injection - String 7% 22671 30 g0uZ 10 24 December 2012
pas_valide File upload - Double extensions 10% 36020 20 g0uZ 10 24 December 2012
pas_valide SQL injection - Numeric 5% 15718 35 g0uZ 7 24 December 2012
pas_valide PHP - register globals 5% 16332 25 g0uZ 2 8 October 2011
pas_valide Local File Inclusion 8% 26272 30 g0uZ 4 2 October 2011
pas_valide Directory traversal 10% 36442 25 g0uZ 3 31 July 2011
pas_valide CRLF 9% 32553 20 g0uZ 7 31 July 2011
pas_valide PHP - Filters 6% 20308 25 g0uZ 3 27 February 2011
pas_valide Backup file 16% 55672 15 g0uZ 10 27 February 2011
pas_valide SQL injection - Blind 3% 8004 50 g0uZ 6 27 February 2011
pas_valide SQL injection - Authentication 13% 47638 30 g0uZ 11 27 February 2011
pas_valide HTTP - Verb tampering 13% 47696 15 g0uZ 10 3 February 2011
pas_valide HTTP - Cookies 13% 46980 20 g0uZ 8 7 October 2006
pas_valide Install files 13% 45031 15 g0uZ 7 7 October 2006
pas_valide HTTP - Directory indexing 22% 79523 15 g0uZ 7 7 October 2006
pas_valide Weak password 31% 113136 10 g0uZ 7 3 October 2006
pas_valide HTTP - User-agent 24% 86658 10 g0uZ 10 3 October 2006
pas_valide HTML - Source code 48% 174978 5 g0uZ 6 3 October 2006

Challenge Results Challenge Results

Pseudo Challenge Lang Date
meuhq Web - Serveur  HTTP - Open redirect fr 18 July 2025 at 11:46
rynbgm Web - Serveur  Directory traversal fr 18 July 2025 at 11:45
Agathe Web - Serveur  HTTP - Redirection invalide fr 18 July 2025 at 11:45
Laurent Collion Web - Serveur  API - Mass Assignment fr 18 July 2025 at 11:45
p.kettmus Web - Serveur  API - Mass Assignment fr 18 July 2025 at 11:44
a1nuar Web - Serveur  HTTP - Directory indexing fr 18 July 2025 at 11:44
stef Web - Serveur  API - Mass Assignment fr 18 July 2025 at 11:43
ben Web - Serveur  API - Mass Assignment fr 18 July 2025 at 11:43
m.rochet Web - Serveur  API - Mass Assignment fr 18 July 2025 at 11:42
azzzimovvv Web - Server  HTTP - Open redirect ru 18 July 2025 at 11:42