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groupon.com Cross Site Scripting Vulnerability

Report ID: OBB-1072577

Security Researcher 4N_CURZE Helped patch 1894 vulnerabilities
Received 7 Coordinated Disclosure badges
Received 17 recommendations
, a holder of 7 badges for responsible and coordinated disclosure, found a Cross Site Scripting security vulnerability affecting groupon.com website and its users.

Following coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has:

      a. verified the vulnerability and confirmed its existence;
      b. notified the website operator about its existence.

Affected Website:groupon.com  
Open Bug Bounty Program:Create your bounty program now. It's open and free.
Vulnerable Application:Custom Code
Vulnerability Type:XSS (Cross Site Scripting) / CWE-79
CVSSv3 Score:6.1 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N]
Disclosure Standard:Coordinated Disclosure based on ISO 29147 guidelines
Discovered and Reported by:4N_CURZE Helped patch 1894 vulnerabilities
Received 7 Coordinated Disclosure badges
Received 17 recommendations
Remediation Guide:OWASP XSS Prevention Cheat Sheet
Export Vulnerability Data:Bugzilla Vulnerability Data
JIRA Vulnerability Data [ Configuration ]
Mantis Vulnerability Data
Splunk Vulnerability Data
XML Vulnerability Data [ XSD ]

Vulnerable URL:

HTTP POST data:

Research's Comment:

Mirror: Click here to view the mirror

Coordinated Disclosure Timeline

Vulnerability Reported:22 January, 2020 08:42 GMT
Vulnerability Verified:27 January, 2020 07:48 GMT
Website Operator Notified:27 January, 2020 07:48 GMT
a. Using the ISO 29147 guidelines
b. Using publicly available security contacts
c. Using Open Bug Bounty notification framework
d. Using security contacts provided by the researcher
Public Report Published
[without any technical details]:
27 January, 2020 07:48 GMT
Additional notification email sent:30 March, 2020 20:14 GMT
Vulnerability Fixed:10 July, 2020 07:25 GMT
Public Disclosure:  InformationA security researcher can delete the report before public disclosure, afterwards the report cannot be deleted or modified anymore. The researcher can also postpone public disclosure date as long as reasonably required to remediate the vulnerability.21 February, 2020 08:42 GMT

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groupon.com

Website Overview

Alexa Global Rank:709
SSL/TLS Server Test:F    View Results
Web Server Security Test:A    View Results
Malware Test:Click here
Domain Health Report:Click here

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  Recent Recommendations

@AndyMSUK     29 November, 2020
    Twitter AndyMSUK:
Thanks for responsibly reporting a vulnerability in my site with clear instructions on how to replicate and fix! Much appreciated.
@DidiZehavi     29 November, 2020
    Twitter DidiZehavi:
Pramod Yadav, Thank you very much for a very good job finding a bug and helping fix it!
@thekeithwaters     29 November, 2020
    Twitter thekeithwaters:
Thanks for reporting the issue and your prompt and friendly response.
@FileTrekker     27 November, 2020
    Twitter FileTrekker:
v0lk3n let us know about an issue on our website, was very polite and keen to help out. Thanks!
@arussellmorris     27 November, 2020
    Twitter arussellmorris:
Thanks to Rbcafe for a responsible disclosure, good repro steps, and also remediation advice