City of Vienna Managed Bug Bounty
By City of Vienna Bug bounty on Bugcrowd wien.at
- Top reward
- $3,500
- Top severity paid
- Critical
- Assets in scope
- 25
- Public CVEs
- 0
- Last change
At a glance
What to know before you start testing.
- Pays up to $3,500
- for critical bugs, from $200.
- Report on Bugcrowd
- Submit through the program page.
- Full safe harbor
- Good-faith research is authorised; no legal action.
- Public disclosure allowed
- You may publish your report.
Rewards
What Bugcrowd lists as the payout for each severity.
| Severity | Relative size | Reward |
|---|---|---|
| Critical |
|
$3,500 from $2,400 |
| High |
|
$2,400 from $750 |
| Medium |
|
$750 from $200 |
- Safe harbor
-
Full
Authorized in accordance with the Computer Fraud and Abuse Act (CFAA) (and/or similar state laws), and we will not initiate or support legal action against you for accidental, good faith violations of this policy;
Summarised with AI from the program policy on Bugcrowd, read 12 Nov 2026, and checked word for word against it. Read the original
Earlier reward tables (1)
- 11 Nov 2026 to 11 Nov 2026: Critical up to $3,500
Scope
25 assets you may test, 10 excluded.
Web 15
- https://*.akhwien.at
- https://*.gesundheitsverbund.at
- https://*.magwien.gv.at
- https://mein.wien.gv.at
- https://secumails.gesundheitsverbund.at
- https://stadtwien-my.sharepoint.com
- https://stp.wien.gv.at
- https://wibi.wien.gv.at
- https://*.wien.at
- https://wien.at
- https://*.wien.gv.at
- https://*.wienkav.at
- https://www.akhwien.at
- https://www.gesundheitsverbund.at
- https://www.wien.gv.at
Android apps 1
- https://play.google.com/store/apps/developer?id=Stadt+Wien&hl=de_AT
APIs 1
- https://mein.wien.gv.at/broker/api/*
iOS apps 1
- https://apps.apple.com/at/developer/stadt-wien/id858505368
Products and areas 7
- AS16314
- AS6720 1/2
- AS6720 2/2
- AS6720 IPv6 1/2
- AS6720 IPv6 2/2
- https://schulenwien.onmicrosoft.com
- https://*.stadtwien.onmicrosoft.com
Out of scope (10)
- Public Network / Veranstaltungsnetz
- https://*/advuew/*
- https://*/agsinspire/*
- https://*/agssoe/* (Multiple Domains)
- https://*/arcgis/*
- https://bi.bildung-wien.gv.at/*
- https://data.wien.gv.at/daten/*
- https://*/geoserverneuogd/* (Multiple Domains)
- https://*/umfrage/*
- https://www.geschichtewiki.wien.gv.at
Rules
What the policy asks of you, and the bug types it won't reward, quoted from City of Vienna Managed Bug Bounty (via Bugcrowd)'s policy. "We" in these lines means the program, not this site.
While testing
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Interact only with accounts you own or have explicit permission to test.
-
Please sign up for an account using your @bugcrowdninja.com email address.
-
When N-Day bugs are released to the public, we will consider these as in scope after 21 days has gone by
-
You are expected, as always, to comply with all applicable laws.
Not accepted
-
P4 vulnerabilities
-
P5 vulnerabilities
-
CSRF Vulnerabilities
-
No Rate Limiting
-
DMARC, DKIM or SPF related issues
-
Request Smuggling Vulnerabilities (we are currently fixing them on our central systems and will include them again after fixing)
Summarised with AI from the program policy on Bugcrowd, read 12 Nov 2026, and checked word for word against it. Read the original
Changes
Tracked since 11 Nov 2026. Last checked 1 hour ago.
-
Scope +
Added to scope: https://data.wien.gv.at/daten/*
Before we tracked it
Scope and reward changes recorded before this page started tracking it.
-
Scope added
https://data.wien.gv.at/daten/* (out of scope)
-
Scope added
https://*/arcgis/* (out of scope)
-
Scope removed
https://www.wien.gv.at/umfrage/* (out of scope)
-
Scope added
https://bi.bildung-wien.gv.at/* (out of scope)
-
Scope removed
https://stp.wien.gv.at/geoserverneuogd/* (out of scope)
-
Scope added
https://*/geoserverneuogd/* (Multiple Domains) (out of scope)
-
Scope added
https://*/agssoe/* (Multiple Domains) (out of scope)
-
Scope added
https://www.geschichtewiki.wien.gv.at (out of scope)
-
Scope added
https://stadtwien-my.sharepoint.com/
-
Scope added
AS6720 1/2
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Scope added
Public Network / Veranstaltungsnetz (out of scope)
-
Scope added
https://apps.apple.com/at/developer/stadt-wien/id858505368
-
Scope added
https://play.google.com/store/apps/developer?id=Stadt+Wien&hl=de_AT
-
Scope added
AS16314
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Scope added
AS6720 IPv6 2/2
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Scope added
AS6720 IPv6 1/2
-
Scope added
AS6720 2/2
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Scope added
https://schulenwien.onmicrosoft.com
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Scope added
https://*.stadtwien.onmicrosoft.com
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Scope added
https://wibi.wien.gv.at/
-
Scope added
https://mein.wien.gv.at/
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Scope added
https://secumails.gesundheitsverbund.at
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Scope added
https://*.wien.at
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Scope added
https://wien.at
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Scope added
https://*.akhwien.at
-
Scope added
https://www.akhwien.at
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Scope added
https://*.wienkav.at
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Scope added
https://*.gesundheitsverbund.at
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Scope added
https://www.gesundheitsverbund.at
-
Scope added
https://*.magwien.gv.at
-
Scope added
https://*.wien.gv.at
Public CVEs
Published vulnerabilities in this vendor's products, from the NVD.
No CVEs matched yet. We match NVD records by vendor name, so products sold under another name can be missing.
Original policy
Copied from bugcrowd.com on 12 Nov 2026. The summaries on this page are made from it; the live page may have changed since.
Description
The Vienna City Administration is the largest employer in Vienna. It stands for social responsibility and accountability, reliability, and clear structures. About 67,000 staff members work for the different units and departments of the City Administration and in the city’s independent enterprises – the Vienna Hospital Group, the public housing association Wiener Wohnen, and the local wastewater management. No technology is perfect and City of Vienna believes that working with skilled security researchers across the globe is crucial in identifying weaknesses in any technology. We are excited for you to participate as a security researcher to help us identify vulnerabilities in our assets. Good luck, and happy hunting! Ratings/Rewards: For the initial prioritization/rating of findings, this engagement will use the Bugcrowd Vulnerability Rating Taxonomy . However, it is important to note that in some cases a vulnerability priority will be modified due to its likelihood or impact. In any instance where an issue is downgraded, a full, detailed explanation will be provided to the researcher - along with the opportunity to appeal, and make a case for a higher priority.
Targets
Testing is only authorized on the targets listed as in scope. Any domain/property of City of Vienna not listed in the targets section is out of scope. Interact only with accounts you own or have explicit permission to test. Access Credentials Accounts on all publicly facing targets can be self-provisioned here or here . Please sign up for an account using your @bugcrowdninja.com email address. For more info regarding @bugcrowdninja email addresses, see here . Exclusions The following submission types are excluded from our program:
- P4 vulnerabilities
- P5 vulnerabilities
- CSRF Vulnerabilities
- No Rate Limiting
- DMARC, DKIM or SPF related issues
- Request Smuggling Vulnerabilities (we are currently fixing them on our central systems and will include them again after fixing) Out-of-Scope Any Domain or IP not listed in the scope section Any of our support or contact forms User data that does not belong to accounts that you have created or been provided Phishing Attempts Distributed or Load Based Denial-of-Service Attacks (single Request Denial-of-Service Attacks are considered in scope) Leaked Credentials from leak databases or purchased from others Using Credentials from other users (other than the self-provisioned ones) N-Day Policy When N-Day bugs are released to the public, we will consider these as in scope after 21 days has gone by e.g: N-day released on 01/01/2025, we would consider it in-scope on 01/22/2025 Safe Harbor When conducting vulnerability research according to this policy, we consider this research to be: Authorized in accordance with the Computer Fraud and Abuse Act (CFAA) (and/or similar state laws), and we will not initiate or support legal action against you for accidental, good faith violations of this policy; Exempt from the Digital Millennium Copyright Act (DMCA), and we will not bring a claim against you for circumvention of technology controls; Exempt from restrictions in our Terms & Conditions that would interfere with conducting security research, and we waive those restrictions on a limited basis for work done under this policy; and Lawful, helpful to the overall security of the Internet, and conducted in good faith. You are expected, as always, to comply with all applicable laws. If at any time you have concerns or are uncertain whether your security research is consistent with this policy, please inquire through the Bugcrowd Support Portal before going any further.
Out of scope (out of scope)
The following domains and URLs are considered out of scope even if they are included in the broader in scope definitions