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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
carla.quip.comIn scope2026-11-14
carlo.quip.comIn scope2026-11-14
carlos.quip.comIn scope2026-11-14
carlyle.quip.comIn scope2026-11-14
carme.quip.comIn scope2026-11-14
carmen.quip.comIn scope2026-11-14
carnival.quip.comIn scope2026-11-14
caro.quip.comIn scope2026-11-14
caroline.quip.comIn scope2026-11-14
carpediem.quip.comIn scope2026-11-14
carpenter.quip.comIn scope2026-11-14
carpetcleaningtx1.quip.comIn scope2026-11-14
carrie.quip.comIn scope2026-11-14
carrier.quip.comIn scope2026-11-14
cars.quip.comIn scope2026-11-14
www.cars.quip.comIn scope2026-11-14
cart.quip.comIn scope2026-11-14
www.cart.quip.comIn scope2026-11-14
carter.quip.comIn scope2026-11-14
cartman.quip.comIn scope2026-11-14
cartoon.quip.comIn scope2026-11-14
cas.quip.comauthIn scope2026-11-14
cas1.quip.comauthIn scope2026-11-14
cas2.quip.comauthIn scope2026-11-14
cas3.quip.comauthIn scope2026-11-14
casa.quip.comIn scope2026-11-14
www.casa.quip.comIn scope2026-11-14
casanova.quip.comIn scope2026-11-14
casas.quip.comIn scope2026-11-14
case.quip.comIn scope2026-11-14
cash.quip.comIn scope2026-11-14
cashing.quip.comIn scope2026-11-14
casino.quip.comIn scope2026-11-14
www.casino.quip.comIn scope2026-11-14
casper.quip.comIn scope2026-11-14
cassini.quip.comIn scope2026-11-14
cassiopeia.quip.comIn scope2026-11-14
cast.quip.comIn scope2026-11-14
casting.quip.comIn scope2026-11-14
castle.quip.comIn scope2026-11-14
castor.quip.comIn scope2026-11-14
cat.quip.comIn scope2026-11-14
cat-world.quip.comIn scope2026-11-14
www.cat.quip.comIn scope2026-11-14
catalog.quip.comIn scope2026-11-14
www.catalog.quip.comIn scope2026-11-14
catalogo.quip.comIn scope2026-11-14
catalogs.quip.comIn scope2026-11-14
catalogue.quip.comIn scope2026-11-14
catalyst.quip.comIn scope2026-11-14
catering.quip.comIn scope2026-11-14
catfish.quip.comIn scope2026-11-14
cathy.quip.comIn scope2026-11-14
cats.quip.comIn scope2026-11-14
www.cats.quip.comIn scope2026-11-14
cbc.quip.comIn scope2026-11-14
cbf1.quip.comIn scope2026-11-14
cbf2.quip.comIn scope2026-11-14
cbf3.quip.comIn scope2026-11-14
cbf4.quip.comIn scope2026-11-14
cbf5.quip.comIn scope2026-11-14
cbf7.quip.comIn scope2026-11-14
cbf8.quip.comIn scope2026-11-14
cbr.quip.comIn scope2026-11-14
cbs.quip.comIn scope2026-11-14
cbt.quip.comIn scope2026-11-14
cc.quip.comIn scope2026-11-14
www.cc.quip.comIn scope2026-11-14
cc1.quip.comIn scope2026-11-14
cc2.quip.comIn scope2026-11-14
cca.quip.comIn scope2026-11-14
ccb.quip.comIn scope2026-11-14
ccbdt.quip.comIn scope2026-11-14
ccc.quip.comIn scope2026-11-14
ccd.quip.comIn scope2026-11-14
cch.quip.comIn scope2026-11-14
cci.quip.comIn scope2026-11-14
ccl.quip.comIn scope2026-11-14
ccm.quip.comIn scope2026-11-14
ccp.quip.comIn scope2026-11-14
ccplumbingservice.quip.comIn scope2026-11-14
ccs.quip.comIn scope2026-11-14
cct.quip.comIn scope2026-11-14
cctv.quip.comIn scope2026-11-14
cd.quip.comIn scope2026-11-14
www.cd.quip.comIn scope2026-11-14
cda.quip.comIn scope2026-11-14
cdb.quip.comIn scope2026-11-14
cdc.quip.comIn scope2026-11-14
cde.quip.comIn scope2026-11-14
www.cde.quip.comIn scope2026-11-14
cdf.quip.comIn scope2026-11-14
cdi.quip.comIn scope2026-11-14
cdl.quip.comIn scope2026-11-14
cdm.quip.comIn scope2026-11-14
cdms.quip.comIn scope2026-11-14
cdn.quip.comIn scope2026-11-14
cdn-source.quip.comIn scope2026-11-14
autoconfig.cdn.quip.comIn scope2026-11-14
autodiscover.cdn.quip.commailIn 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