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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
awards.quip.comIn scope2026-11-14
awc.quip.comIn scope2026-11-14
awesome.quip.comIn scope2026-11-14
awesomeport.quip.comIn scope2026-11-14
aws.quip.comIn scope2026-11-14
aws-smail.quip.comIn scope2026-11-14
awstats.quip.comIn scope2026-11-14
ax.quip.comIn scope2026-11-14
ax2inc.quip.comIn scope2026-11-14
axa.quip.comIn scope2026-11-14
axel.quip.comIn scope2026-11-14
axiom.quip.comIn scope2026-11-14
axis.quip.comIn scope2026-11-14
axon.quip.comIn scope2026-11-14
aya.quip.comIn scope2026-11-14
aymen.quip.comIn scope2026-11-14
ayoub.quip.comIn scope2026-11-14
ayuda.quip.comIn scope2026-11-14
az.quip.comIn scope2026-11-14
www.az.quip.comIn scope2026-11-14
aza.quip.comIn scope2026-11-14
azalea.quip.comIn scope2026-11-14
azerty.quip.comIn scope2026-11-14
aziz.quip.comIn scope2026-11-14
azmoon.quip.comIn scope2026-11-14
azrael.quip.comIn scope2026-11-14
aztec.quip.comIn scope2026-11-14
azure.quip.comIn scope2026-11-14
b.quip.comIn scope2026-11-14
delivery.b.quip.comIn scope2026-11-14
www.b.quip.comIn scope2026-11-14
b1.quip.comIn scope2026-11-14
b10.quip.comIn scope2026-11-14
b11.quip.comIn scope2026-11-14
b117.quip.comIn scope2026-11-14
b12.quip.comIn scope2026-11-14
b123.quip.comIn scope2026-11-14
b13.quip.comIn scope2026-11-14
b14.quip.comIn scope2026-11-14
b148.quip.comIn scope2026-11-14
b15.quip.comIn scope2026-11-14
b16.quip.comIn scope2026-11-14
b161.quip.comIn scope2026-11-14
b17.quip.comIn scope2026-11-14
b18.quip.comIn scope2026-11-14
b19.quip.comIn scope2026-11-14
b2.quip.comIn scope2026-11-14
b20.quip.comIn scope2026-11-14
b21.quip.comIn scope2026-11-14
b22.quip.comIn scope2026-11-14
b23.quip.comIn scope2026-11-14
b26.quip.comIn scope2026-11-14
b2b.quip.comIn scope2026-11-14
b2btest.quip.comIn scope2026-11-14
b2future.quip.comIn scope2026-11-14
b3.quip.comIn scope2026-11-14
b30.quip.comIn scope2026-11-14
b31.quip.comIn scope2026-11-14
b32.quip.comIn scope2026-11-14
b33.quip.comIn scope2026-11-14
b4.quip.comIn scope2026-11-14
b5.quip.comIn scope2026-11-14
b6.quip.comIn scope2026-11-14
b7.quip.comIn scope2026-11-14
b8.quip.comIn scope2026-11-14
b9.quip.comIn scope2026-11-14
b99.quip.comIn scope2026-11-14
ba.quip.comIn scope2026-11-14
baba.quip.comIn scope2026-11-14
babbage.quip.comIn scope2026-11-14
babe.quip.comIn scope2026-11-14
babel.quip.comIn scope2026-11-14
babes.quip.comIn scope2026-11-14
baby.quip.comIn scope2026-11-14
www.baby.quip.comIn scope2026-11-14
babyface.quip.comIn scope2026-11-14
babylon.quip.comIn scope2026-11-14
bac.quip.comIn scope2026-11-14
bacchus.quip.comIn scope2026-11-14
bach.quip.comIn scope2026-11-14
back.quip.comIn scope2026-11-14
back2.quip.comIn scope2026-11-14
backbone.quip.comIn scope2026-11-14
chelyabinsk-rnoc-rr02.backbone.quip.comIn scope2026-11-14
backend.quip.comIn scope2026-11-14
backernation.quip.comIn scope2026-11-14
backlink.quip.comIn scope2026-11-14
backlinks.quip.comIn scope2026-11-14
backoffice.quip.comadminIn scope2026-11-14
backpack.quip.comIn scope2026-11-14
backstage.quip.comIn scope2026-11-14
backup.quip.comdataIn scope2026-11-14
www.backup.quip.comdataIn scope2026-11-14
backup01.quip.comdataIn scope2026-11-14
backup02.quip.comdataIn scope2026-11-14
backup1.quip.comdataIn scope2026-11-14
backup2.quip.comdataIn scope2026-11-14
backup3.quip.comdataIn scope2026-11-14
backup4.quip.comdataIn scope2026-11-14
backup5.quip.comdataIn 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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