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Bug bounty program

SL

Slack

Open on HackerOneAtlas
Platform
HackerOne
Bounties
Pays
Assets in scope
19
Disclosed reports
133
Subdomains
137,436
Vendor on CyberSIXT
Slack (3 CVEs, 0 exploited)

Most upvoted reports133

All reports
Most upvoted reports of Slack
ReportWeaknessDisclosedBountyVotes
Mass account takeovers using HTTP Request Smuggling on https://slackb.com/ to steal session cookiesAnalysed#737140Injection and Smuggling2020-03-12–870
Remote Code Execution in Slack desktop apps + bonusAnalysed#783877Command and Code Injection2020-08-28–509
XSS vulnerable parameter in a location hashAnalysed#146336Cross-site Scripting2019-10-16–455
URL link spoofingAnalysed#481472Input Validation and Logic2020-04-26$250362
TURN server allows TCP and UDP proxying to internal network, localhost and meta-data servicesAnalysed#333419Server-Side Request Forgery2020-03-12$3,500323
AWS bucket leading to iOS test build code and configuration exposureAnalysed#404822Information Disclosure2019-02-23$1,500321
Slack DTLS uses a private key that is in the public domain, which may lead to SRTP stream hijackAnalysed#531032Cryptography2020-03-12$2,000170
XSS in gist integrationAnalysed#11073Cross-site Scripting2019-04-28$500157
Unauthenticated LFI revealing log informationAnalysed#272578Information Disclosure2018-01-26–123
Stealing xoxs-tokens using weak postMessage / call-popup redirect to current team domainAnalysed#207170Misconfiguration and Insecure Design2017-02-28–120

Subdomains137,436

Root
Scope
Name suggests
First seen
Text file137,436 names
Subdomains of Slack
NameScopeFirst seen
custom.quip.comIn scope2026-11-14
customer.quip.comIn scope2026-11-14
www.customer.quip.comIn scope2026-11-14
customers.quip.comIn scope2026-11-14
customersupport.quip.comIn scope2026-11-14
cute.quip.comIn scope2026-11-14
cv.quip.comIn scope2026-11-14
www.cv.quip.comIn scope2026-11-14
cvs.quip.comIn scope2026-11-14
cw.quip.comIn scope2026-11-14
cw01host1.quip.comIn scope2026-11-14
cw01host10.quip.comIn scope2026-11-14
cw01host2.quip.comIn scope2026-11-14
cw01host3.quip.comIn scope2026-11-14
cw01host4.quip.comIn scope2026-11-14
cw01host5.quip.comIn scope2026-11-14
cw01host6.quip.comIn scope2026-11-14
cw01host7.quip.comIn scope2026-11-14
cw01host8.quip.comIn scope2026-11-14
cw01host9.quip.comIn scope2026-11-14
cw03host1.quip.comIn scope2026-11-14
cw03host2.quip.comIn scope2026-11-14
cw07web01.quip.comIn scope2026-11-14
cwa.quip.comIn scope2026-11-14
cwc.quip.comIn scope2026-11-14
cwcx.quip.comIn scope2026-11-14
cweb.quip.comIn scope2026-11-14
cws.quip.comIn scope2026-11-14
cx.quip.comIn scope2026-11-14
cxzy.quip.comIn scope2026-11-14
cy.quip.comIn scope2026-11-14
cyan.quip.comIn scope2026-11-14
cyber.quip.comIn scope2026-11-14
cyberspace.quip.comIn scope2026-11-14
cyberzone.quip.comIn scope2026-11-14
cyc.quip.comIn scope2026-11-14
cyclone.quip.comIn scope2026-11-14
cyclops.quip.comIn scope2026-11-14
cygnus.quip.comIn scope2026-11-14
cynthia.quip.comIn scope2026-11-14
cypress.quip.comIn scope2026-11-14
cyprus.quip.comIn scope2026-11-14
cyrus.quip.comIn scope2026-11-14
cz.quip.comIn scope2026-11-14
www.cz.quip.comIn scope2026-11-14
czat.quip.comIn scope2026-11-14
czi.quip.comIn scope2026-11-14
d.quip.comIn scope2026-11-14
www.d.quip.comIn scope2026-11-14
d0.quip.comIn scope2026-11-14
d1.quip.comIn scope2026-11-14
d10.quip.comIn scope2026-11-14
d101.quip.comIn scope2026-11-14
d11.quip.comIn scope2026-11-14
d12.quip.comIn scope2026-11-14
d13.quip.comIn scope2026-11-14
d14.quip.comIn scope2026-11-14
d15.quip.comIn scope2026-11-14
d16.quip.comIn scope2026-11-14
d2.quip.comIn scope2026-11-14
d21.quip.comIn scope2026-11-14
d22.quip.comIn scope2026-11-14
d27.quip.comIn scope2026-11-14
d28.quip.comIn scope2026-11-14
d3.quip.comIn scope2026-11-14
d31.quip.comIn scope2026-11-14
d32.quip.comIn scope2026-11-14
d34.quip.comIn scope2026-11-14
d36.quip.comIn scope2026-11-14
d37.quip.comIn scope2026-11-14
d4.quip.comIn scope2026-11-14
d5.quip.comIn scope2026-11-14
d6.quip.comIn scope2026-11-14
d7.quip.comIn scope2026-11-14
d8.quip.comIn scope2026-11-14
d9.quip.comIn scope2026-11-14
da.quip.comIn scope2026-11-14
da1.quip.comIn scope2026-11-14
da17.quip.comIn scope2026-11-14
da2.quip.comIn scope2026-11-14
daa.quip.comIn scope2026-11-14
daacap.quip.comIn scope2026-11-14
dac.quip.comIn scope2026-11-14
dacsandanang.quip.comIn scope2026-11-14
dada.quip.comIn scope2026-11-14
daedalus.quip.comIn scope2026-11-14
daemon.quip.comIn scope2026-11-14
daesin.quip.comIn scope2026-11-14
daffy.quip.comIn scope2026-11-14
dag.quip.comIn scope2026-11-14
dagiac.quip.comIn scope2026-11-14
daily.quip.comIn scope2026-11-14
daiso-net.quip.comIn scope2026-11-14
daisuke.quip.comIn scope2026-11-14
daisy.quip.comIn scope2026-11-14
dakar.quip.comIn scope2026-11-14
dakhoaquoctehanoi.quip.comIn scope2026-11-14
dakota.quip.comIn scope2026-11-14
dali.quip.comIn scope2026-11-14
dallas.quip.comIn scope2026-11-14

20,412 names are covered by the program's own scope; 7 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.

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