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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
correu.quip.comIn scope2026-11-14
corvette.quip.comIn scope2026-11-14
corvus.quip.comIn scope2026-11-14
cos.quip.comIn scope2026-11-14
cosanostra.quip.comIn scope2026-11-14
cosign.quip.comIn scope2026-11-14
cosme.quip.comIn scope2026-11-14
cosmic.quip.comIn scope2026-11-14
cosmo.quip.comIn scope2026-11-14
cosmos.quip.comIn scope2026-11-14
cost.quip.comIn scope2026-11-14
costa.quip.comIn scope2026-11-14
costarica.quip.comIn scope2026-11-14
cotecna.quip.comIn scope2026-11-14
cottage.quip.comIn scope2026-11-14
cotton.quip.comIn scope2026-11-14
couchbase.quip.comIn scope2026-11-14
cougar.quip.comIn scope2026-11-14
council.quip.comIn scope2026-11-14
count.quip.comIn scope2026-11-14
countdown.quip.comIn scope2026-11-14
counter.quip.comIn scope2026-11-14
www.counter.quip.comIn scope2026-11-14
counters.quip.comIn scope2026-11-14
counterstrike.quip.comIn scope2026-11-14
country.quip.comIn scope2026-11-14
coupang4.quip.comIn scope2026-11-14
www.coupon.quip.comIn scope2026-11-14
couponcoder.quip.comIn scope2026-11-14
courier.quip.comIn scope2026-11-14
course.quip.comIn scope2026-11-14
courses.quip.comIn scope2026-11-14
cover.quip.comIn scope2026-11-14
covers.quip.comIn scope2026-11-14
cow.quip.comIn scope2026-11-14
cowboy.quip.comIn scope2026-11-14
cox.quip.comIn scope2026-11-14
coyote.quip.comIn scope2026-11-14
cozygames.quip.comIn scope2026-11-14
cp.quip.comIn scope2026-11-14
builder.cp.quip.comIn scope2026-11-14
ftp.cp.quip.comdataIn scope2026-11-14
webmail.cp.quip.commailIn scope2026-11-14
www.cp.quip.comIn scope2026-11-14
cp01int.quip.comIn scope2026-11-14
cp1.quip.comIn scope2026-11-14
cp2.quip.comIn scope2026-11-14
cp3.quip.comIn scope2026-11-14
cp4.quip.comIn scope2026-11-14
cpa.quip.comIn scope2026-11-14
www.cpa.quip.comIn scope2026-11-14
cpan.quip.comIn scope2026-11-14
cpanel.quip.comadminIn scope2026-11-14
builder.cpanel.quip.comadminIn scope2026-11-14
webmail.cpanel.quip.comadmin, mailIn scope2026-11-14
www.cpanel.quip.comadminIn scope2026-11-14
cpanel1.quip.comadminIn scope2026-11-14
cpanel2.quip.comadminIn scope2026-11-14
cpanel3.quip.comadminIn scope2026-11-14
cpc.quip.comIn scope2026-11-14
cpd.quip.comIn scope2026-11-14
cpe.quip.comIn scope2026-11-14
cpl.quip.comIn scope2026-11-14
cploginky.quip.comIn scope2026-11-14
cploginoh.quip.comIn scope2026-11-14
cpm.quip.comIn scope2026-11-14
cpnew.quip.comIn scope2026-11-14
cps.quip.comIn scope2026-11-14
www.cps.quip.comIn scope2026-11-14
cpt.quip.comIn scope2026-11-14
cptest.quip.comIn scope2026-11-14
cpw.quip.comIn scope2026-11-14
cq.quip.comIn scope2026-11-14
cr.quip.comIn scope2026-11-14
cra.quip.comIn scope2026-11-14
cracker.quip.comIn scope2026-11-14
craft.quip.comIn scope2026-11-14
crafts.quip.comIn scope2026-11-14
craig.quip.comIn scope2026-11-14
crane.quip.comIn scope2026-11-14
crash.quip.comIn scope2026-11-14
crater.quip.comIn scope2026-11-14
crawl.quip.comIn scope2026-11-14
crawler.quip.comIn scope2026-11-14
crayon.quip.comIn scope2026-11-14
crazy.quip.comIn scope2026-11-14
www.crazy.quip.comIn scope2026-11-14
crc.quip.comIn scope2026-11-14
cream.quip.comIn scope2026-11-14
create.quip.comIn scope2026-11-14
creater.quip.comIn scope2026-11-14
creativesoncall.quip.comIn scope2026-11-14
creator.quip.comIn scope2026-11-14
credit.quip.comIn scope2026-11-14
creditbank.quip.comIn scope2026-11-14
creditcard.quip.comIn scope2026-11-14
credito.quip.comIn scope2026-11-14
crema.quip.comIn scope2026-11-14
creme.quip.comIn scope2026-11-14
crew.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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Updated