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Bug bounty reports15,219

Publicly disclosed HackerOne reports, with the platform's own outcome and severity.

Program:Concrete CMS
Status:Valid
Clear
Severity
Weakness
Year
Bounty paid0
Access stated
Access needed
Technique
Clear filters82 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
Remote Code Execution (Reverse Shell) - File ManagerAnalysed#768322ValidCommand and Code InjectionMedium2020-07-21–114
Password Reset link hijacking via Host Header PoisoningAnalysed#226659ValidAccess ControlNone2017-06-06–73
Time-base SQL Injection in Search UsersAnalysed#876800ValidSQL InjectionMedium2020-08-05–60
Arbitrary File delete via PHAR deserialization#921288ValidDeserialization and Object InjectionHigh2021-10-20–28
SVG file that HTML Included is able to upload via File Manager#437863ValidCross-site ScriptingLow2019-04-20–26
'cnvID' parameter vulnerable to Insecure Direct Object References#265284ValidInsecure Direct Object ReferenceCritical2018-04-15–22
XSS in select attribute options#753567ValidCross-site ScriptingLow2020-04-29–20
SSRF thru File Replace#243865ValidServer-Side Request Forgery–2018-01-06–19
Authenticated path traversal to RCE#1102067ValidFile and Path HandlingHigh2021-10-15–18
Reflected XSS vulnerability in Database name field on installation screen#289330ValidCross-site ScriptingLow2018-01-20–18
Remote Code Execution through Extension Bypass on Log Functionality#841947ValidCommand and Code InjectionHigh2020-07-03–16
SSRF bypass#863221ValidServer-Side Request ForgeryLow2021-10-04–15
Cross Site Scripting (XSS) Stored - Private messaging#768313ValidCross-site ScriptingLow2020-09-25–15
Local File Inclusion path bypass#147570ValidMisconfiguration and Insecure Design–2016-08-19–13
Unauthenticated reflected XSS in preview_as_user function#643442ValidCross-site ScriptingMedium2019-12-06–12
Stored XSS in Headline TextControl element in Express forms [ concrete5 8.1.0 ]#230278ValidCross-site ScriptingMedium2017-07-14–12
CSRF Full Account Takeover#152052ValidCross-Site Request Forgery–2016-08-12–11
Local File Inclusion Vulnerability in Concrete5 version 5.7.3.1#59665ValidMisconfiguration and Insecure Design–2016-06-26–11
Bypass auth.email-domains#4795ValidAuthentication–2014-04-30–11
SSRF mitigation bypass using DNS Rebind attack#1369312ValidServer-Side Request ForgeryLow2022-11-25–10
A bypass of adding remote files in concrete5 FIlemanager leads to remote code execution#1350444ValidNo weakness recordedMedium2021-11-11–10
Stored unauth XSS in calendar event via CSRF#1102018ValidCross-site ScriptingMedium2021-10-15–10
HttpOnly flag not set for cookie on concrete5.org#4792ValidMisconfiguration and Insecure Design–2014-04-16–10
Stored XSS vulnerability in RSS Feeds Description field#248133ValidCross-site ScriptingLow2017-08-18–9
Stored XSS in Pages SEO dialog Name field (concrete5 8.1.0)#230029ValidCross-site ScriptingMedium2017-07-27–9
Stored XSS in the file search filter#873584ValidCross-site ScriptingLow2020-07-03–8
Stored XSS in Private Messages 'Reply' allows to execute malicious JavaScript against any user while replying to the message which contains payload#247517ValidCross-site ScriptingHigh2017-08-17–8
SSRF - pivoting in the private LAN#1364797ValidServer-Side Request ForgeryLow2022-11-25–7
Stored XSS on Add Calendar#300571ValidCross-site ScriptingLow2018-09-01–7
Stored XSS on Add Event in Calendar#300532ValidCross-site ScriptingLow2018-09-01–7
Stored XSS vulnerability in additional URLs in 'Location' dialog [Sitemap]#251358ValidCross-site ScriptingLow2017-11-02–7
Stored XSS in Name field in User Groups/Group Details form#247521ValidCross-site ScriptingLow2017-08-17–7
Stored XSS in Express Objects - Concrete5 v8.1.0#221325ValidNo weakness recorded–2017-05-17–7
XSS in private message#4826ValidCross-site Scripting–2014-05-14–7
Fetching the update json scheme from concrete5 over HTTP leads to remote code execution#982130ValidCryptographyHigh2021-09-22–6
Unauthenticated HTML Injection Stored - ContactUs form#768327ValidNo weakness recordedMedium2020-09-25–6
broken authentication#23921ValidAuthentication–2014-09-21–6
FULL PATH DISCLOSUR#7736ValidInformation Disclosure–2014-04-17–6
XSS on [/concrete/concrete/elements/dashboard/sitemap.php]#6853ValidCross-site Scripting–2014-08-28–6
XSS IN member List (Because of City Textbox)#4839ValidCross-site Scripting–2014-04-16–6
Phar Deserialization Vulnerability via Logging Settings#1063039ValidDeserialization and Object InjectionMedium2021-09-24–5
Stored XSS on express entries#873474ValidCross-site ScriptingLow2020-07-03–5
Stored XSS in Conversations (both client and admin) when Active Conversation Editor is set to "Rich Text"#616770ValidCross-site ScriptingMedium2021-10-04–5
Stored XSS in RSS Feeds Title (Concrete5 v8.1.0)#221380ValidCross-site Scripting–2017-05-17–4
page_controls_menu_js can reveal collection version of page#4938ValidInformation Disclosure–2014-03-31–4
/index.php/dashboard/sitemap/explore/ Cross-site scripting#4808ValidCross-site Scripting–2014-06-09–4
Sendmail Remote Code Execution Vulnerability in Concrete5 version 5.7.3.1#59663ValidCommand and Code Injection–2015-06-06–3
Multiple Stored Cross Site Scripting Vulnerabilities in Concrete5 version 5.7.3.1#59662ValidCross-site Scripting–2016-06-26–3
Multiple Cross Site Request Forgery Vulnerabilities in Concrete5 version 5.7.3.1#59660ValidCross-Site Request Forgery–2016-06-26–3
Stored XSS in Feature tile#50639ValidCross-site Scripting–2015-07-08–3

Status and severity are HackerOne's. “Access stated” is what the title says; “Access needed” and techniques come from CyberSIXT's analysis of the public report (2,444 analysed so far), which can be wrong. Data as of 2026-11-15.