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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
christianity.quip.comIn scope2026-11-14
christmas.quip.comIn scope2026-11-14
christopher.quip.comIn scope2026-11-14
chromakey.quip.comIn scope2026-11-14
chrome.quip.comIn scope2026-11-14
chromium.quip.comIn scope2026-11-14
chronicle.quip.comIn scope2026-11-14
chronos.quip.comIn scope2026-11-14
chrysler.quip.comIn scope2026-11-14
chs.quip.comIn scope2026-11-14
chu-vision-institute.quip.comIn scope2026-11-14
chulavistalivescan.quip.comIn scope2026-11-14
chum.quip.comIn scope2026-11-14
church.quip.comIn scope2026-11-14
ci.quip.comciIn scope2026-11-14
www.ci.quip.comciIn scope2026-11-14
ciao.quip.comIn scope2026-11-14
cibosf.quip.comIn scope2026-11-14
cic.quip.comIn scope2026-11-14
cie.quip.comIn scope2026-11-14
cielo.quip.comIn scope2026-11-14
cim.quip.comIn scope2026-11-14
cincinnati.quip.comIn scope2026-11-14
cine.quip.comIn scope2026-11-14
cinema.quip.comIn scope2026-11-14
www.cinema.quip.comIn scope2026-11-14
cip.quip.comIn scope2026-11-14
circ.quip.comIn scope2026-11-14
circa.quip.comIn scope2026-11-14
circe.quip.comIn scope2026-11-14
circle.quip.comIn scope2026-11-14
circus.quip.comIn scope2026-11-14
cirrico.quip.comIn scope2026-11-14
cirrus.quip.comIn scope2026-11-14
cis.quip.comIn scope2026-11-14
www.cis.quip.comIn scope2026-11-14
cisco.quip.comIn scope2026-11-14
cisco-capwap-controller.quip.comIn scope2026-11-14
cisco-lwapp-controller.quip.comIn scope2026-11-14
cisco1.quip.comIn scope2026-11-14
ciscoworks.quip.comIn scope2026-11-14
cit.quip.comIn scope2026-11-14
asp-winterville.cit.quip.comIn scope2026-11-14
bayside.cit.quip.comIn scope2026-11-14
cisl-gijon.cit.quip.comIn scope2026-11-14
cisl-murcia.cit.quip.comIn scope2026-11-14
cisl-plaisir.cit.quip.comIn scope2026-11-14
fakalipit-mbp.cit.quip.comIn scope2026-11-14
isp-caledon.cit.quip.comIn scope2026-11-14
penarth.cit.quip.comIn scope2026-11-14
swansea.cit.quip.comIn scope2026-11-14
tallow.cit.quip.comIn scope2026-11-14
citadel.quip.comIn scope2026-11-14
citibank.quip.comIn scope2026-11-14
citrix.quip.comvpnIn scope2026-11-14
citrix1.quip.comvpnIn scope2026-11-14
citrix2.quip.comvpnIn scope2026-11-14
citroen.quip.comIn scope2026-11-14
citron.quip.comIn scope2026-11-14
city.quip.comIn scope2026-11-14
www.city.quip.comIn scope2026-11-14
ciutravel.quip.comIn scope2026-11-14
civil.quip.comIn scope2026-11-14
cj.quip.comIn scope2026-11-14
cjc.quip.comIn scope2026-11-14
cjxy.quip.comIn scope2026-11-14
cjy.quip.comIn scope2026-11-14
ck.quip.comIn scope2026-11-14
ckarea.quip.comIn scope2026-11-14
cl.quip.comIn scope2026-11-14
www.cl.quip.comIn scope2026-11-14
cl1.quip.comIn scope2026-11-14
claims.quip.comIn scope2026-11-14
claire.quip.comIn scope2026-11-14
clan.quip.comIn scope2026-11-14
clans.quip.comIn scope2026-11-14
clara.quip.comIn scope2026-11-14
clare.quip.comIn scope2026-11-14
clarifyhealth.quip.comIn scope2026-11-14
clarity.quip.comIn scope2026-11-14
clark.quip.comIn scope2026-11-14
clasificados.quip.comIn scope2026-11-14
www.clasificados.quip.comIn scope2026-11-14
class.quip.comIn scope2026-11-14
dns.class.quip.comIn scope2026-11-14
classes.quip.comIn scope2026-11-14
classic.quip.comlegacyIn scope2026-11-14
classico.quip.comIn scope2026-11-14
classificados.quip.comIn scope2026-11-14
classified.quip.comIn scope2026-11-14
classifieds.quip.comIn scope2026-11-14
autoconfig.classifieds.quip.comIn scope2026-11-14
autodiscover.classifieds.quip.commailIn scope2026-11-14
webdisk.classifieds.quip.comIn scope2026-11-14
www.classifieds.quip.comIn scope2026-11-14
classroom.quip.comIn scope2026-11-14
claude.quip.comIn scope2026-11-14
clay.quip.comIn scope2026-11-14
claymore.quip.comIn scope2026-11-14
claytonjennings.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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