XSS - Server Side

20 Points

Who said XSS was only for the client side?

Author

Elf, 23 June 2023

Level

Validations

2923 Challengers 1%

Note

176 Votes

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4 Solutions

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Challenge Results

Pseudo	Challenge	Lang	Date
d0z	XSS - Server Side		14 April 2025 at 20:00
huitrebleu	XSS - Server Side		14 April 2025 at 15:10
Quantitatif	XSS - Server Side		13 April 2025 at 23:54
IronMan	XSS - Server Side		13 April 2025 at 18:55
Mitra	XSS - Server Side		13 April 2025 at 18:50
Admineral	XSS - Server Side		13 April 2025 at 15:55
Gazzz	XSS - Server Side		12 April 2025 at 19:00
emp3r0r10	XSS - Server Side		12 April 2025 at 15:31
crucifery	XSS - Server Side		12 April 2025 at 00:23
l'écuyer	XSS - Server Side		11 April 2025 at 21:49

96 Challenges

Results	Name	Validations	Number of points	Difficulty	Author ↓↑	Note	Solution	Date
	JWT - Unsecure Key Handling	1% 840	35		Nishacid , Mika		5	23 February 2023
	API - Broken Access	2% 5054	15		Nishacid , Mika		3	18 January 2024
	JWT - Header Injection	1% 1285	30		Nishacid , Mika		2	23 February 2023
	API - Mass Assignment	1% 3163	20		Nishacid , Mika		2	18 January 2024
	JWT - Unsecure File Signature	1% 2389	25		Nishacid , Mika		3	23 February 2023
	API - Broken Access 2	1% 545	40		Nishacid , Mika		1	18 January 2024
	PHP - Apache configuration	1% 2554	25		erk3 , nemoz		4	8 July 2022
	Nginx - Alias Misconfiguration	1% 2564	15		.Yo0x		2	27 September 2024
	Nginx - Root Location Misconfiguration	1% 603	15		.Yo0x		0	27 September 2024
	Nginx - SSRF Misconfiguration	1% 177	30		.Yo0x		0	27 September 2024
	Python - dotenv	1% 66	70		jrjgjk		0	27 September 2024
	GraphQL - Backend injection	1% 461	40		apges01		1	19 January 2023
	GraphQL - Injection	1% 835	30		apges01		2	19 January 2023
	GraphQL - Introspection	2% 3934	20		apges01		4	19 January 2023
	Yaml - Deserialization	1% 1457	35		Nishacid		2	20 April 2021
	XSS - Server Side	1% 2919	20		Elf		4	23 June 2023
	Flask - Development server	1% 1047	30		Sanlokii		1	29 November 2023
	Flask - Unsecure session	1% 2856	20		Sanlokii		1	29 November 2023
	Java - Custom gadget deserialization	1% 200	50		Elweth		0	28 December 2023
	PHP - Unserialize Pop Chain	1% 730	55		Worty		2	22 October 2021
	NodeJS - Prototype Pollution Bypass	1% 564	45		Worty		1	22 October 2021
	File upload - Polyglot	1% 484	45		Cyxo		1	8 July 2022
	Node - Eval	1% 3039	30		Mhd_Root		7	24 February 2021
	Node - Serialize	1% 1330	35		Mhd_Root		2	24 February 2021
	Python - Blind SSTI Filters Bypass	1% 693	75		Podalirius		5	7 September 2021
	NodeJS - vm escape	1% 781	50		Podalirius		1	15 April 2021
	PHP - Eval - Advanced filters bypass	1% 635	40		Podalirius		2	8 July 2022
	Python - Server-side Template Injection Introduction	2% 4727	25		Podalirius		7	7 September 2021
	GraphQL - Mutation	1% 1608	40		CanardMandarin		2	20 October 2020
	HTTP - POST	14% 50212	15		Th1b4ud		10	14 August 2018
	JWT - Public key	2% 3980	30		Jrmbt		5	21 August 2019
	JWT - Weak secret	4% 12259	25		Jrmbt		6	21 August 2019
	HTTP - IP restriction bypass	9% 30159	10		Cyrhades		7	23 March 2021
	Elixir - EEx	1% 303	35		lolo42		1	29 November 2023
	PHP - Remote Xdebug	1% 1532	25		mayfly		4	18 March 2020
	PHP - Unserialize overflow	1% 798	55		mayfly		2	4 April 2020
	PHP - Eval	2% 3713	40		chmod		10	8 November 2018
	JWT - Introduction	5% 17675	20		Kn0wledge		5	21 August 2019
	PHP - Loose Comparison	3% 7398	30		ghozt		4	10 January 2018
	NoSQL injection - Blind	1% 3095	45		ghozt		6	26 November 2016
	XSLT - Code execution	2% 3793	30		ghozt		5	16 July 2017
	File upload - ZIP	3% 9776	30		ghozt		3	3 August 2017
	SQL Injection - Second Order	1% 236	55		k4ndar3c		1	29 November 2023
	PHP - assert()	5% 15681	25		Birdy42		10	26 November 2016
	JWT - Revoked token	2% 6309	25		ArnC		6	20 March 2020
	SQL injection - Time based	2% 5915	45		ycam		4	11 September 2015
	SQL Injection - Routed	2% 5520	35		soka		5	24 December 2016
	NoSQL injection - Authentication	3% 7823	35		mastho		8	31 May 2015
	PHP - type juggling	3% 8999	30		vic		4	10 March 2016
	Local File Inclusion - Double encoding	4% 13043	30		zM_		4	13 June 2016
	Insecure Code Management	4% 14045	20		Swissky		6	29 September 2019
	HTTP - Open redirect	19% 67742	10		Swissky		10	2 August 2017
	Java - Server-side Template Injection	4% 10838	30		righettod		6	29 November 2015
	SQL injection - Insert	1% 3244	40		sambecks		4	23 February 2015
	Server Side Request Forgery	1% 1956	50		sambecks		7	22 June 2018
	SQL injection - Error	3% 8059	40		sambecks		5	4 March 2015
	XML External Entity	2% 5746	35		sambecks		2	20 October 2014
	Local File Inclusion - Wrappers	2% 3740	40		sambecks		4	2 March 2016
	SQL injection - Filter bypass	1% 3006	80		sambecks		7	21 July 2014
	PHP - preg_replace()	3% 9162	30		sambecks		4	2 March 2016
	PHP - Command injection	19% 67611	10		sambecks		10	20 September 2017
	Command injection - Filter bypass	3% 7790	30		sambecks		6	20 September 2017
	SQL injection - Authentication - GBK	3% 10015	30		dvor4x		4	2 December 2015
	Java - Spring Boot	1% 2382	40		dvor4x		3	24 December 2016
	PHP - Path Truncation	2% 5515	35		Geluchat		6	25 March 2015
	SQL Truncation	2% 6880	35		Geluchat		2	1 May 2015
	PHP - Serialization	2% 6824	35		Arod		3	3 February 2014
	SQL injection - File reading	2% 6041	40		Arod		3	19 October 2014
	HTTP - Improper redirect	12% 43076	15		Arod		10	26 November 2014
	HTTP - Headers	16% 55277	15		Arod		9	11 January 2015
	LDAP injection - Authentication	3% 10520	35		g0uZ		8	26 May 2013
	SQL injection - Blind	3% 7845	50		g0uZ		6	27 February 2011
	HTTP - Verb tampering	14% 46854	15		g0uZ		10	3 February 2011
	Backup file	16% 54775	15		g0uZ		10	27 February 2011
	LDAP injection - Blind	1% 3528	55		g0uZ		2	8 June 2013
	HTTP - Directory indexing	22% 78282	15		g0uZ		7	7 October 2006
	CRLF	9% 32099	20		g0uZ		7	31 July 2011
	Weak password	31% 111341	10		g0uZ		7	3 October 2006
	HTTP - User-agent	24% 85108	10		g0uZ		10	3 October 2006
	XPath injection - Blind	1% 2407	75		g0uZ		5	27 December 2012
	Install files	13% 44272	15		g0uZ		6	7 October 2006
	HTTP - Cookies	13% 46209	20		g0uZ		8	7 October 2006
	File upload - Double extensions	10% 35377	20		g0uZ		10	24 December 2012
	File upload - MIME type	8% 28446	20		g0uZ		10	26 December 2012
	XPath injection - String	2% 3994	40		g0uZ		5	26 May 2013
	SQL injection - String	7% 22247	30		g0uZ		10	24 December 2012
	Directory traversal	10% 35762	25		g0uZ		3	31 July 2011
	File upload - Null byte	7% 24257	25		g0uZ		4	26 December 2012
	PHP - Filters	6% 19947	25		g0uZ		3	27 February 2011
	PHP - register globals	5% 16053	25		g0uZ		2	8 October 2011
	Local File Inclusion	8% 25905	30		g0uZ		4	2 October 2011
	Remote File Inclusion	4% 11979	30		g0uZ		8	25 November 2015
	XPath injection - Authentication	2% 6719	35		g0uZ		6	27 December 2012
	SQL injection - Authentication	14% 46798	30		g0uZ		11	27 February 2011
	SQL injection - Numeric	5% 15348	35		g0uZ		7	24 December 2012
	HTML - Source code	48% 172021	5		g0uZ		5	3 October 2006