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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
coca.quip.comIn scope2026-11-14
cochran-firm-law.quip.comIn scope2026-11-14
coco.quip.comIn scope2026-11-14
cocoa.quip.comIn scope2026-11-14
coconut.quip.comIn scope2026-11-14
cocoon.quip.comIn scope2026-11-14
cod.quip.comIn scope2026-11-14
www.cod.quip.comIn scope2026-11-14
code.quip.comIn scope2026-11-14
www.code.quip.comIn scope2026-11-14
codecsworld.quip.comIn scope2026-11-14
coder.quip.comIn scope2026-11-14
codex.quip.comIn scope2026-11-14
cody.quip.comIn scope2026-11-14
coffee.quip.comIn scope2026-11-14
cognizantsaasfocus.quip.comIn scope2026-11-14
cognos.quip.comIn scope2026-11-14
coin.quip.comIn scope2026-11-14
coins.quip.comIn scope2026-11-14
coke.quip.comIn scope2026-11-14
colgate.quip.comIn scope2026-11-14
colibri.quip.comIn scope2026-11-14
collab.quip.comIn scope2026-11-14
collaborate.quip.comIn scope2026-11-14
collaboration.quip.comIn scope2026-11-14
collection.quip.comIn scope2026-11-14
collections.quip.comIn scope2026-11-14
collector.quip.comIn scope2026-11-14
college.quip.comIn scope2026-11-14
colliers.quip.comIn scope2026-11-14
collins.quip.comIn scope2026-11-14
colo.quip.comIn scope2026-11-14
colocation.quip.comIn scope2026-11-14
colombia.quip.comIn scope2026-11-14
color.quip.comIn scope2026-11-14
colorado.quip.comIn scope2026-11-14
colorful.quip.comIn scope2026-11-14
colors.quip.comIn scope2026-11-14
colortrendsco.quip.comIn scope2026-11-14
colossus.quip.comIn scope2026-11-14
colt.quip.comIn scope2026-11-14
columbia.quip.comIn scope2026-11-14
columbus.quip.comIn scope2026-11-14
com.quip.comIn scope2026-11-14
com-services-vip.quip.comIn scope2026-11-14
www.com.quip.comIn scope2026-11-14
combat.quip.comIn scope2026-11-14
combo.quip.comIn scope2026-11-14
comcast.quip.comIn scope2026-11-14
come.quip.comIn scope2026-11-14
comedy.quip.comIn scope2026-11-14
comet.quip.comIn scope2026-11-14
comet1.quip.comIn scope2026-11-14
comet2.quip.comIn scope2026-11-14
comforth.quip.comIn scope2026-11-14
comic.quip.comIn scope2026-11-14
comics.quip.comIn scope2026-11-14
www.comics.quip.comIn scope2026-11-14
comm.quip.comIn scope2026-11-14
comment.quip.comIn scope2026-11-14
comments.quip.comIn scope2026-11-14
commerce.quip.comIn scope2026-11-14
commercial.quip.comIn scope2026-11-14
commercial-banking-technology.quip.comIn scope2026-11-14
common.quip.comIn scope2026-11-14
common-sw.quip.comIn scope2026-11-14
common-sw1.quip.comIn scope2026-11-14
common-sw2.quip.comIn scope2026-11-14
communication.quip.comIn scope2026-11-14
communications.quip.comIn scope2026-11-14
communities.quip.comIn scope2026-11-14
webdisk.community.quip.comIn scope2026-11-14
www.community.quip.comIn scope2026-11-14
comnexa.quip.comIn scope2026-11-14
comodo.quip.comIn scope2026-11-14
comp.quip.comIn scope2026-11-14
company.quip.comIn scope2026-11-14
compaq.quip.comIn scope2026-11-14
compare.quip.comIn scope2026-11-14
compass.quip.comIn scope2026-11-14
complaints.quip.comIn scope2026-11-14
complete.quip.comIn scope2026-11-14
composite.quip.comIn scope2026-11-14
compras.quip.comIn scope2026-11-14
compton.quip.comIn scope2026-11-14
computer.quip.comIn scope2026-11-14
www.computer.quip.comIn scope2026-11-14
coms.quip.comIn scope2026-11-14
comsci.quip.comIn scope2026-11-14
comunidad.quip.comIn scope2026-11-14
comunity.quip.comIn scope2026-11-14
con.quip.comIn scope2026-11-14
conan.quip.comIn scope2026-11-14
concept.quip.comIn scope2026-11-14
conciergecontracts.quip.comIn scope2026-11-14
concord.quip.comIn scope2026-11-14
concorde.quip.comIn scope2026-11-14
concours.quip.comIn scope2026-11-14
concurs.quip.comIn scope2026-11-14
concurso.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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