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Bug bounty program

Platform
HackerOne
Bounties
Pays
Assets in scope
42
Disclosed reports
13
Subdomains
17,149
Vendor on CyberSIXT
Paypal (21 CVEs, 0 exploited)

Most upvoted reports13

All reports
Most upvoted reports of PayPal
ReportWeaknessDisclosedBountyVotes
Bypass for #488147 enables stored XSS on https://paypal.com/signin againAnalysed#510152Injection and Smuggling2019-08-07$20,0002,687
Token leak in security challenge flow allows retrieving victim's PayPal email and plain text passwordAnalysed#739737Authentication2020-01-08$15,3001,409
RCE via npm misconfig -- installing internal libraries from the public registryAnalysed#925585Command and Code Injection2021-02-09$30,000946
DoS on PayPal via web cache poisoningAnalysed#622122Denial of Service2019-10-23$9,700851
IDOR to add secondary users in www.paypal.com/businessmanage/users/api/v1/usersAnalysed#415081Insecure Direct Object Reference2019-07-30$10,500797
Stored XSS on https://paypal.com/signin via cache poisoningAnalysed#488147Injection and Smuggling2019-08-07$18,900685
[PayPal Android] Remote theft of user session using push_notification_webview deeplinkAnalysed#424443Open Redirect2019-02-07–188
[Venmo Android] Remote theft of user sessionAnalysed#401940Open Redirect2019-02-07–151
Reflected XSS at https://www.paypal.com/ppcreditapply/da/usAnalysed#753835Cross-site Scripting2020-05-19–137
XSS [flow] - on www.paypal.com/paypalme/my/landing (requires user interaction)Analysed#425200Cross-site Scripting2018-11-06–100

Subdomains17,149

Subdomains of PayPal
NameScopeFirst seen
api.xoom.comapiIn scope2026-11-14
api-edge.xoom.comapiIn scope2026-11-14
atl-webservices.xoom.comapiIn scope2026-11-14
api.dr.xoom.comapiIn scope2026-11-14
k8s-api-proxy.xm-dev-hub-oma.ord.engtools.xoom.comapi, dev, toolsIn scope2026-11-14
k8s-api-proxy.xm-dev-xibs-oma.ord.engtools.xoom.comapi, dev, toolsIn scope2026-11-14
api.fra.xoom.comapiIn scope2026-11-14
webservices.fra.xoom.comapiIn scope2026-11-14
internal-webservices.xoom.comapi, internalIn scope2026-11-14
api.oma.xoom.comapiIn scope2026-11-14
webservices.oma.xoom.comapiIn scope2026-11-14
api.sandbox.xoom.comapi, testIn scope2026-11-14
sb1-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb10-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb11-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb12-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb13-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb14-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb15-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb16-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb17-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb18-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb19-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb2-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb20-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb21-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb22-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb23-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb24-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb25-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb26-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb27-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb28-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb29-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb3-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb30-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb31-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb32-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb33-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb34-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb35-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb36-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb37-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb38-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb39-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb4-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb40-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb5-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb6-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb7-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb8-api.sandbox.xoom.comapi, testIn scope2026-11-14
sb9-api.sandbox.xoom.comapi, testIn scope2026-11-14
webservices.sandbox.xoom.comapi, testIn scope2026-11-14
k8s-api-proxy.hub-cd.oma.st.xoom.comapi, toolsIn scope2026-11-14
staging-api.xoom.comapi, stagingIn scope2026-11-14
api.staging.xoom.comapi, stagingIn scope2026-11-14
api.fra.staging.xoom.comapi, stagingIn scope2026-11-14
webservices.fra.staging.xoom.comapi, stagingIn scope2026-11-14
api.oma.staging.xoom.comapi, stagingIn scope2026-11-14
qa-api.oma.staging.xoom.comapi, staging, testIn scope2026-11-14
webservices.oma.staging.xoom.comapi, stagingIn scope2026-11-14
webservices.staging.xoom.comapi, stagingIn scope2026-11-14
webservices.xoom.comapiIn scope2026-11-14

17,017 names are covered by the program's own scope; 3 were first seen this week. Names come from ProjectDiscovery's public Chaos dataset (passive sources: certificate logs, DNS and other public data), matched to the program by its listing and its own domain scope. A name being in a dataset is not permission to test it: only what the program's own scope says is in scope, and its policy decides. CyberSIXT does not resolve, probe or scan these names. Tags come from the name alone. Source: ProjectDiscovery Chaos. Subdomains on the Atlas, or search the subdomains of every program.

A name in a dataset is not permission to test it: the program's own scope and rules decide. Data as of 2026-11-15.