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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:Development
First seen
Text fileClear filters9,581 names
Subdomains of Slack
NameScopeFirst seen
76dev.slack.comdevNot in the scope2026-11-14
ab-dev-community.slack.comdevNot in the scope2026-11-14
aby-devel.slack.comdevNot in the scope2026-11-14
dev.admin.slack.comadmin, devNot in the scope2026-11-14
aero-dev.slack.comdevNot in the scope2026-11-14
ai-dev-lab.slack.comdevNot in the scope2026-11-14
aineko-dev.slack.comdevNot in the scope2026-11-14
ainetwork-dev.slack.comdevNot in the scope2026-11-14
alphax-dev.slack.comdevNot in the scope2026-11-14
amadeus4dev.slack.comdevNot in the scope2026-11-14
amc-dev.slack.comdevNot in the scope2026-11-14
ampify-dev-plat.slack.comdevNot in the scope2026-11-14
ampify-dev-platform.slack.comdevNot in the scope2026-11-14
amsterdamcoin-dev.slack.comdevNot in the scope2026-11-14
amsxbg-dev.slack.comdevNot in the scope2026-11-14
android-dev-france.slack.comdevNot in the scope2026-11-14
apex-dev.slack.comdevNot in the scope2026-11-14
api-dev.slack.comapi, devNot in the scope2026-11-14
basic-nodejs-dev.api.slack.comapi, devNot in the scope2026-11-14
cim-api-dev.api.slack.comapi, devNot in the scope2026-11-14
cim-dev.api.slack.comapi, devNot in the scope2026-11-14
cim-geo-dev.api.slack.comapi, devNot in the scope2026-11-14
dev.api.slack.comapi, devNot in the scope2026-11-14
dogfood-dev.api.slack.comapi, devNot in the scope2026-11-14
gcom-product-find-dev.api.slack.comapi, devNot in the scope2026-11-14
gws-dev.api.slack.comapi, devNot in the scope2026-11-14
local.api.slack.comapi, devNot in the scope2026-11-14
localhost.api.slack.comapi, devNot in the scope2026-11-14
nodejs-dev.api.slack.comapi, devNot in the scope2026-11-14
searchportal-dev.api.slack.comapi, devNot in the scope2026-11-14
basic-nodejs-dev.app.slack.comdevNot in the scope2026-11-14
cim-api-dev.app.slack.comapi, devNot in the scope2026-11-14
cim-dev.app.slack.comdevNot in the scope2026-11-14
cim-geo-dev.app.slack.comdevNot in the scope2026-11-14
dev.app.slack.comdevNot in the scope2026-11-14
dogfood-dev.app.slack.comdevNot in the scope2026-11-14
gcom-product-find-dev.app.slack.comdevNot in the scope2026-11-14
gws-dev.app.slack.comdevNot in the scope2026-11-14
localhost.app.slack.comdevNot in the scope2026-11-14
nodejs-dev.app.slack.comdevNot in the scope2026-11-14
searchportal-dev.app.slack.comdevNot in the scope2026-11-14
apple2dev.slack.comdevNot in the scope2026-11-14
aquaris-dev.slack.comdevNot in the scope2026-11-14
arcl-dev.slack.comdevNot in the scope2026-11-14
ardech-drom-dev.slack.comdevNot in the scope2026-11-14
assistant-dev-ja.slack.comdevNot in the scope2026-11-14
auger-dev.slack.comdevNot in the scope2026-11-14
ayudadigitalcovid-dev.slack.comdevNot in the scope2026-11-14
b5g-dev.slack.comdevNot in the scope2026-11-14
basic-nodejs-dev.slack.comdevNot in the scope2026-11-14
bcoin-dev.slack.comdevNot in the scope2026-11-14
bit-dev-community.slack.comdevNot in the scope2026-11-14
blm-dev.slack.comdevNot in the scope2026-11-14
blockdomain-dev.slack.comdevNot in the scope2026-11-14
blocknetdx-dev.slack.comdevNot in the scope2026-11-14
blog-dev.slack.comdevNot in the scope2026-11-14
localhost.blog.slack.comdevNot in the scope2026-11-14
boi-dev.slack.comdevNot in the scope2026-11-14
breaking-dev.slack.comdevNot in the scope2026-11-14
bucara-dev.slack.comdevNot in the scope2026-11-14
bugout-dev.slack.comdevNot in the scope2026-11-14
bureau-local.slack.comdevNot in the scope2026-11-14
cardsmith-dev.slack.comdevNot in the scope2026-11-14
catho-devel.slack.comdevNot in the scope2026-11-14
cc-dev-001.slack.comdevNot in the scope2026-11-14
cdk-dev.slack.comdevNot in the scope2026-11-14
cim-api-dev.slack.comapi, devNot in the scope2026-11-14
cim-dev.slack.comdevNot in the scope2026-11-14
cim-geo-dev.slack.comdevNot in the scope2026-11-14
circleblack-dev.slack.comdevNot in the scope2026-11-14
citadel-dev.slack.comdevNot in the scope2026-11-14
cluster-dev.slack.comdevNot in the scope2026-11-14
code4covid-dev1.slack.comdevNot in the scope2026-11-14
dev.code4covid.slack.comdevNot in the scope2026-11-14
dev.codevscovid19.slack.comdevNot in the scope2026-11-14
dev1.codevscovid19.slack.comdevNot in the scope2026-11-14
codevscovid19dev1.slack.comdevNot in the scope2026-11-14
colombia-dev.slack.comdevNot in the scope2026-11-14
colx-dev.slack.comdevNot in the scope2026-11-14
2016hbsgzbrj.ddjsmf.com-22-dev30.slack.comdevNot in the scope2026-11-14
cortex-dot-dev.slack.comdevNot in the scope2026-11-14
dev1.covid-19list.slack.comdevNot in the scope2026-11-14
covid-19volunteersuk-dev.slack.comdevNot in the scope2026-11-14
covid-19volunteersuk-dev1.slack.comdevNot in the scope2026-11-14
dev1.covid-19volunteersuk.slack.comdevNot in the scope2026-11-14
covid-atlas-dev.slack.comdevNot in the scope2026-11-14
covid-atlas-dev1.slack.comdevNot in the scope2026-11-14
dev.covid-atlas.slack.comdevNot in the scope2026-11-14
dev1.covid19-task-force.slack.comdevNot in the scope2026-11-14
covid19-ventfinder-dev.slack.comdevNot in the scope2026-11-14
covid19-ventfinder-dev1.slack.comdevNot in the scope2026-11-14
dev.covid19-ventfinder.slack.comdevNot in the scope2026-11-14
covid19cybert-qvl7792dev1.slack.comdevNot in the scope2026-11-14
covid19cz-dev1.slack.comdevNot in the scope2026-11-14
dev.covid19cz.slack.comdevNot in the scope2026-11-14
covid19data-dev.slack.comdevNot in the scope2026-11-14
covid19data-dev1.slack.comdevNot in the scope2026-11-14
dev1.covid19data.slack.comdevNot in the scope2026-11-14
covid19peoplehelp-dev1.slack.comdevNot in the scope2026-11-14
dev1.covid19projec-kyi7956.slack.comdevNot 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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