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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:slack.com
Scope
Name suggests
First seen
Text fileClear filters117,026 names
Subdomains of Slack
NameScopeFirst seen
10-sars-cov-2covid-19.slack.comNot in the scope2026-11-14
10-sec.slack.comNot in the scope2026-11-14
10-tech4covid19.slack.comNot in the scope2026-11-14
covid.10.slack.comNot in the scope2026-11-14
covid-19volunteersuk.10.slack.comNot in the scope2026-11-14
covid-atlas.10.slack.comNot in the scope2026-11-14
covid19-task-force.10.slack.comNot in the scope2026-11-14
covidsolutions.10.slack.comNot in the scope2026-11-14
covidzero.10.slack.comNot in the scope2026-11-14
ethiopia-covid19.10.slack.comNot in the scope2026-11-14
euvsvirus.10.slack.comNot in the scope2026-11-14
gentilsvirus.10.slack.comNot in the scope2026-11-14
hackcovid19.10.slack.comNot in the scope2026-11-14
opencover.10.slack.comNot in the scope2026-11-14
opencoverui.10.slack.comNot in the scope2026-11-14
sars-cov-2covid-19.10.slack.comNot in the scope2026-11-14
tech4covid19.10.slack.comNot in the scope2026-11-14
ucd-covid19.10.slack.comNot in the scope2026-11-14
wirvsvirus.10.slack.comNot in the scope2026-11-14
www.10.slack.comNot in the scope2026-11-14
100.slack.comNot in the scope2026-11-14
1000.slack.comNot in the scope2026-11-14
1000cad.slack.comNot in the scope2026-11-14
1000startupdigital.slack.comNot in the scope2026-11-14
1000wordsofsummer-hq.slack.comNot in the scope2026-11-14
100500games.slack.comNot in the scope2026-11-14
100daysofdevops.slack.comNot in the scope2026-11-14
100daysofnocode.slack.comNot in the scope2026-11-14
100daysoftechstartup.slack.comNot in the scope2026-11-14
100daysofx.slack.comNot in the scope2026-11-14
100developer.slack.comNot in the scope2026-11-14
100fm.slack.comNot in the scope2026-11-14
100guys.slack.comNot in the scope2026-11-14
100kchallenge.slack.comNot in the scope2026-11-14
100kinjuly.slack.comNot in the scope2026-11-14
100mentors.slack.comNot in the scope2026-11-14
100pipfx.slack.comNot in the scope2026-11-14
100tokens.slack.comNot in the scope2026-11-14
100x-group.slack.comNot in the scope2026-11-14
100xcode.slack.comNot in the scope2026-11-14
101.slack.comNot in the scope2026-11-14
1010data.slack.comNot in the scope2026-11-14
101data.slack.comNot in the scope2026-11-14
101fretboard.slack.comNot in the scope2026-11-14
101loop.slack.comNot in the scope2026-11-14
101obex.slack.comNot in the scope2026-11-14
10220exarplantalitio.slack.comNot in the scope2026-11-14
1024pix.slack.comNot in the scope2026-11-14
103.slack.comNot in the scope2026-11-14
103sqn.slack.comNot in the scope2026-11-14
105.slack.comNot in the scope2026-11-14
106.slack.comNot in the scope2026-11-14
109.slack.comNot in the scope2026-11-14
109-team.slack.comNot in the scope2026-11-14
1099discotechs.slack.comNot in the scope2026-11-14
10academy.slack.comNot in the scope2026-11-14
10academyccin-quy8073.slack.comNot in the scope2026-11-14
10billionfuture.slack.comNot in the scope2026-11-14
10bitworks.slack.comNot in the scope2026-11-14
10bo.slack.comNot in the scope2026-11-14
10code4covid.slack.comNot in the scope2026-11-14
10covid.slack.comNot in the scope2026-11-14
10covid-atlas.slack.comNot in the scope2026-11-14
10covid-solutions-com.slack.comNot in the scope2026-11-14
10covid19-ventfinder.slack.comNot in the scope2026-11-14
10covid19cz.slack.comNot in the scope2026-11-14
10covid19data.slack.comNot in the scope2026-11-14
10covid19peoplehelp.slack.comNot in the scope2026-11-14
10endcoronaviru-mcd1821.slack.comNot in the scope2026-11-14
10fw.slack.comNot in the scope2026-11-14
10hackathoncovid19.slack.comNot in the scope2026-11-14
10hackcovid19.slack.comNot in the scope2026-11-14
10in2020.slack.comNot in the scope2026-11-14
10jogl-covid-19.slack.comNot in the scope2026-11-14
10makervsvirus.slack.comNot in the scope2026-11-14
10minutebetatest.slack.comNot in the scope2026-11-14
10minutosprogramando.slack.comNot in the scope2026-11-14
10moreblogposts.slack.comNot in the scope2026-11-14
10open-covid19.slack.comNot in the scope2026-11-14
10talentsco.slack.comNot in the scope2026-11-14
10to8.slack.comNot in the scope2026-11-14
10up.slack.comNot in the scope2026-11-14
10webexperts.slack.comNot in the scope2026-11-14
10x100.slack.comNot in the scope2026-11-14
10xacademy-modules.slack.comNot in the scope2026-11-14
10xaccelerator.slack.comNot in the scope2026-11-14
10xfcmembers.slack.comNot in the scope2026-11-14
10xinc.slack.comNot in the scope2026-11-14
10xu.slack.comNot in the scope2026-11-14
11.slack.comNot in the scope2026-11-14
11-2019-ncov-hackathon.slack.comNot in the scope2026-11-14
11-codevscovid19.slack.comNot in the scope2026-11-14
11-covid.slack.comNot in the scope2026-11-14
11-covid19data.slack.comNot in the scope2026-11-14
11-covid19peoplehelp.slack.comNot in the scope2026-11-14
11-covid19projec-kyi7956.slack.comNot in the scope2026-11-14
11-covidvu.slack.comNot in the scope2026-11-14
11-covidzero.slack.comNot in the scope2026-11-14
11-dataagainstcovid-19.slack.comNot in the scope2026-11-14
11-endcoronaviru-mcd1821.slack.comNot in the 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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