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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
cri.quip.comIn scope2026-11-14
cricket.quip.comIn scope2026-11-14
crime.quip.comIn scope2026-11-14
crimea.quip.comIn scope2026-11-14
www.crimea.quip.comIn scope2026-11-14
crimson.quip.comIn scope2026-11-14
cris.quip.comIn scope2026-11-14
cristal.quip.comIn scope2026-11-14
cristi.quip.comIn scope2026-11-14
cristian.quip.comIn scope2026-11-14
cristina.quip.comIn scope2026-11-14
critical.quip.comIn scope2026-11-14
crl1.quip.comIn scope2026-11-14
crl2.quip.comIn scope2026-11-14
crm.quip.comIn scope2026-11-14
crm-dev.quip.comdevIn scope2026-11-14
autoconfig.crm.quip.comIn scope2026-11-14
autodiscover.crm.quip.commailIn scope2026-11-14
webdisk.crm.quip.comIn scope2026-11-14
www.crm.quip.comIn scope2026-11-14
crm2.quip.comIn scope2026-11-14
crmdev.quip.comIn scope2026-11-14
croatia.quip.comIn scope2026-11-14
cron.quip.comIn scope2026-11-14
cronos.quip.comIn scope2026-11-14
cross.quip.comIn scope2026-11-14
crossage.quip.comIn scope2026-11-14
crossroads.quip.comIn scope2026-11-14
crow.quip.comIn scope2026-11-14
crowd.quip.comIn scope2026-11-14
crown.quip.comIn scope2026-11-14
crs.quip.comIn scope2026-11-14
crt.quip.comIn scope2026-11-14
cruise.quip.comIn scope2026-11-14
crunch.quip.comIn scope2026-11-14
crux.quip.comIn scope2026-11-14
cryo.quip.comIn scope2026-11-14
crypton.quip.comIn scope2026-11-14
crystal.quip.comIn scope2026-11-14
cs.quip.comIn scope2026-11-14
mx.cs.quip.commailIn scope2026-11-14
www.cs.quip.comIn scope2026-11-14
cs01.quip.comIn scope2026-11-14
cs02.quip.comIn scope2026-11-14
cs1.quip.comIn scope2026-11-14
cs110.quip.comIn scope2026-11-14
cs16.quip.comIn scope2026-11-14
cs2.quip.comIn scope2026-11-14
cs3.quip.comIn scope2026-11-14
cs4.quip.comIn scope2026-11-14
cs5.quip.comIn scope2026-11-14
csa.quip.comIn scope2026-11-14
csc.quip.comIn scope2026-11-14
csd.quip.comIn scope2026-11-14
cse.quip.comIn scope2026-11-14
csf.quip.comIn scope2026-11-14
csg.quip.comIn scope2026-11-14
csi.quip.comIn scope2026-11-14
csj.quip.comIn scope2026-11-14
csm.quip.comIn scope2026-11-14
csm-nat-10.quip.comIn scope2026-11-14
cso.quip.comIn scope2026-11-14
csp.quip.comIn scope2026-11-14
csr.quip.comIn scope2026-11-14
css.quip.comIn scope2026-11-14
www.css.quip.comIn scope2026-11-14
css1.quip.comIn scope2026-11-14
css2.quip.comIn scope2026-11-14
cstest.quip.comIn scope2026-11-14
cstrike.quip.comIn scope2026-11-14
csweb.quip.comIn scope2026-11-14
ct.quip.comIn scope2026-11-14
www.ct.quip.comIn scope2026-11-14
ctc.quip.comIn scope2026-11-14
ctl.quip.comIn scope2026-11-14
ctp.quip.comIn scope2026-11-14
ctrl.quip.comIn scope2026-11-14
ctshirts.quip.comIn scope2026-11-14
ctx.quip.comIn scope2026-11-14
cu.quip.comIn scope2026-11-14
cub.quip.comIn scope2026-11-14
cuba.quip.comIn scope2026-11-14
cube.quip.comIn scope2026-11-14
cuckoo.quip.comIn scope2026-11-14
cucumber.quip.comIn scope2026-11-14
cuda.quip.comIn scope2026-11-14
cuda2.quip.comIn scope2026-11-14
cul.quip.comIn scope2026-11-14
cultura.quip.comIn scope2026-11-14
www.cultura.quip.comIn scope2026-11-14
culture.quip.comIn scope2026-11-14
cumulus.quip.comIn scope2026-11-14
cup.quip.comIn scope2026-11-14
cupcake.quip.comIn scope2026-11-14
cupid.quip.comIn scope2026-11-14
curadiabetes.quip.comIn scope2026-11-14
cure.quip.comIn scope2026-11-14
curiosity.quip.comIn scope2026-11-14
cursos.quip.comIn scope2026-11-14
curtis.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