File upload - Double extensions

20 Points

Gallery v0.02

Author

g0uZ, 24 December 2012

Level

Validations

36196 Challengers 10%

Note

1394 Votes

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10 Solutions

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Challenge Results

Pseudo	Challenge	Lang	Date
ducsoomin	File upload - Double extensions		20 August 2025 at 17:10
songuku172	File upload - Double extensions		20 August 2025 at 13:19
SIzyfe	File upload - Double extensions		20 August 2025 at 11:33
he4am	File upload - Double extensions		20 August 2025 at 04:47
achig	File upload - Double extensions		19 August 2025 at 23:28
Cipher	File upload - Double extensions		19 August 2025 at 22:21
superg1zm0	File upload - Double extensions		19 August 2025 at 20:24
KrZio	File upload - Double extensions		19 August 2025 at 16:23
aaaa144	File upload - Double extensions		19 August 2025 at 14:41
Cuteness_	File upload - Double extensions		19 August 2025 at 10:47

97 Challenges

Results	Name	Validations	Number of points	Difficulty	Author	Note	Solution	Date
	HTML - Source code	48% 175796	5		g0uZ		6	3 October 2006
	HTTP - IP restriction bypass	9% 32009	10		Cyrhades		8	23 March 2021
	HTTP - Open redirect	19% 69383	10		Swissky		10	2 August 2017
	HTTP - User-agent	24% 87067	10		g0uZ		10	3 October 2006
	Weak password	31% 113581	10		g0uZ		7	3 October 2006
	PHP - Command injection	19% 69528	10		sambecks		10	20 September 2017
	API - Broken Access	2% 6175	15		Nishacid , Mika		4	18 January 2024
	Backup file	16% 55912	15		g0uZ		10	27 February 2011
	HTTP - Directory indexing	22% 79841	15		g0uZ		7	7 October 2006
	HTTP - Headers	16% 56600	15		Arod		9	11 January 2015
	HTTP - POST	14% 51544	15		Th1b4ud		10	14 August 2018
	HTTP - Improper redirect	12% 44092	15		Arod		10	26 November 2014
	HTTP - Verb tampering	13% 47905	15		g0uZ		10	3 February 2011
	Install files	13% 45224	15		g0uZ		7	7 October 2006
	Nginx - Alias Misconfiguration	1% 3406	15		.Yo0x		3	27 September 2024
	Nginx - Root Location Misconfiguration	1% 1712	15		.Yo0x		1	27 September 2024
	API - Mass Assignment	2% 3764	20		Nishacid , Mika		2	18 January 2024
	CRLF	9% 32688	20		g0uZ		7	31 July 2011
	File upload - Double extensions	10% 36196	20		g0uZ		10	24 December 2012
	File upload - MIME type	8% 29198	20		g0uZ		10	26 December 2012
	Flask - Unsecure session	1% 3292	20		Sanlokii		1	29 November 2023
	GraphQL - Introspection	2% 4310	20		apges01		4	19 January 2023
	HTTP - Cookies	13% 47180	20		g0uZ		8	7 October 2006
	Insecure Code Management	4% 14478	20		Swissky		6	29 September 2019
	JWT - Introduction	5% 18415	20		Kn0wledge		5	21 August 2019
	XSS - Server Side	1% 3273	20		Elf		4	23 June 2023
	Directory traversal	10% 36618	25		g0uZ		3	31 July 2011
	File upload - Null byte	7% 24852	25		g0uZ		4	26 December 2012
	JWT - Revoked token	2% 6670	25		ArnC		6	20 March 2020
	JWT - Weak secret	4% 12817	25		Jrmbt		7	21 August 2019
	JWT - Unsecure File Signature	1% 2708	25		Nishacid , Mika		3	23 February 2023
	PHP - assert()	5% 16100	25		Birdy42		10	26 November 2016
	PHP - Apache configuration	1% 2780	25		erk3 , nemoz		4	8 July 2022
	PHP - Filters	6% 20403	25		g0uZ		3	27 February 2011
	PHP - register globals	5% 16408	25		g0uZ		2	8 October 2011
	PHP - Remote Xdebug	1% 1589	25		mayfly		4	18 March 2020
	Python - Server-side Template Injection Introduction	2% 5095	25		Podalirius		7	7 September 2021
	File upload - ZIP	3% 10101	30		ghozt		3	3 August 2017
	Flask - Development server	1% 1244	30		Sanlokii		1	29 November 2023
	GraphQL - Injection	1% 955	30		apges01		2	19 January 2023
	Command injection - Filter bypass	3% 8041	30		sambecks		6	20 September 2017
	Java - Server-side Template Injection	4% 11199	30		righettod		6	29 November 2015
	JWT - Public key	2% 4179	30		Jrmbt		5	21 August 2019
	JWT - Header Injection	1% 1462	30		Nishacid , Mika		2	23 February 2023
	Local File Inclusion	8% 26408	30		g0uZ		4	2 October 2011
	Local File Inclusion - Double encoding	4% 13383	30		zM_		4	13 June 2016
	Nginx - SSRF Misconfiguration	1% 405	30		.Yo0x		1	27 September 2024
	Node - Eval	1% 3179	30		Mhd_Root		7	24 February 2021
	PHP - Loose Comparison	3% 7591	30		ghozt		4	10 January 2018
	PHP - preg_replace()	3% 9404	30		sambecks		4	2 March 2016
	PHP - type juggling	3% 9184	30		vic		4	10 March 2016
	Remote File Inclusion	4% 12266	30		g0uZ		8	25 November 2015
	Ruby on Rails - ransack	1% 54	30		koma		0	23 June 2025
	SQL injection - Authentication	13% 47891	30		g0uZ		11	27 February 2011
	SQL injection - Authentication - GBK	3% 10311	30		dvor4x		4	2 December 2015
	SQL injection - String	7% 22801	30		g0uZ		10	24 December 2012
	XSLT - Code execution	2% 3900	30		ghozt		5	16 July 2017
	Elixir - EEx	1% 399	35		lolo42		1	29 November 2023
	JWT - Unsecure Key Handling	1% 966	35		Nishacid , Mika		5	23 February 2023
	LDAP injection - Authentication	3% 10757	35		g0uZ		8	26 May 2013
	Node - Serialize	1% 1423	35		Mhd_Root		2	24 February 2021
	NoSQL injection - Authentication	3% 8044	35		mastho		8	31 May 2015
	PHP - Path Truncation	2% 5638	35		Geluchat		6	25 March 2015
	PHP - Serialization	2% 7006	35		Arod		3	3 February 2014
	SQL injection - Numeric	5% 15804	35		g0uZ		7	24 December 2012
	SQL Injection - Routed	2% 5689	35		soka		5	24 December 2016
	SQL Truncation	2% 7083	35		Geluchat		2	1 May 2015
	XML External Entity	2% 5894	35		sambecks		2	20 October 2014
	XPath injection - Authentication	2% 6874	35		g0uZ		6	27 December 2012
	Yaml - Deserialization	1% 1561	35		Nishacid		2	20 April 2021
	API - Broken Access 2	1% 662	40		Nishacid , Mika		1	18 January 2024
	GraphQL - Backend injection	1% 518	40		apges01		1	19 January 2023
	GraphQL - Mutation	1% 1673	40		CanardMandarin		2	20 October 2020
	Java - Spring Boot	1% 2433	40		dvor4x		3	24 December 2016
	Local File Inclusion - Wrappers	2% 3860	40		sambecks		4	2 March 2016
	PHP - Eval	2% 3830	40		chmod		10	8 November 2018
	PHP - Eval - Advanced filters bypass	1% 682	40		Podalirius		2	8 July 2022
	SQL injection - Error	3% 8384	40		sambecks		5	4 March 2015
	SQL injection - Insert	1% 3339	40		sambecks		4	23 February 2015
	SQL injection - File reading	2% 6176	40		Arod		3	19 October 2014
	XPath injection - String	2% 4090	40		g0uZ		5	26 May 2013
	File upload - Polyglot	1% 541	45		Cyxo		1	8 July 2022
	NodeJS - Prototype Pollution Bypass	1% 613	45		Worty		1	22 October 2021
	NoSQL injection - Blind	1% 3197	45		ghozt		6	26 November 2016
	SQL injection - Time based	2% 6085	45		ycam		4	11 September 2015
	Java - Custom gadget deserialization	1% 259	50		Elweth		0	28 December 2023
	NodeJS - vm escape	1% 820	50		Podalirius		1	15 April 2021
	Server Side Request Forgery	1% 2021	50		sambecks		7	22 June 2018
	SQL injection - Blind	3% 8045	50		g0uZ		6	27 February 2011
	LDAP injection - Blind	1% 3600	55		g0uZ		2	8 June 2013
	PHP - Unserialize overflow	1% 828	55		mayfly		2	4 April 2020
	PHP - Unserialize Pop Chain	1% 790	55		Worty		2	22 October 2021
	SQL Injection - Second Order	1% 274	55		k4ndar3c		1	29 November 2023
	Python - dotenv	1% 134	70		jrjgjk		1	27 September 2024
	Python - Blind SSTI Filters Bypass	1% 742	75		Podalirius		5	7 September 2021
	XPath injection - Blind	1% 2485	75		g0uZ		5	27 December 2012
	SQL injection - Filter bypass	1% 3125	80		sambecks		7	21 July 2014