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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
bip.quip.comIn scope2026-11-14
www.bip.quip.comIn scope2026-11-14
bird.quip.comIn scope2026-11-14
birds.quip.comIn scope2026-11-14
birmingham.quip.comIn scope2026-11-14
birthday.quip.comIn scope2026-11-14
bis.quip.comIn scope2026-11-14
bismarck.quip.comIn scope2026-11-14
bison.quip.comIn scope2026-11-14
bit.quip.comIn scope2026-11-14
bit-degree.quip.comIn scope2026-11-14
bitrix.quip.comIn scope2026-11-14
bits.quip.comIn scope2026-11-14
biuro.quip.comIn scope2026-11-14
biyou.quip.comIn scope2026-11-14
biz.quip.comIn scope2026-11-14
www.biz.quip.comIn scope2026-11-14
bizkor.quip.comIn scope2026-11-14
biznes.quip.comIn scope2026-11-14
bj.quip.comIn scope2026-11-14
bk.quip.comIn scope2026-11-14
bk01.quip.comIn scope2026-11-14
bk1.quip.comIn scope2026-11-14
bk2.quip.comIn scope2026-11-14
bk3.quip.comIn scope2026-11-14
bkm.quip.comIn scope2026-11-14
bkp.quip.comIn scope2026-11-14
bks.quip.comIn scope2026-11-14
bl.quip.comIn scope2026-11-14
bla.quip.comIn scope2026-11-14
black.quip.comIn scope2026-11-14
www.black.quip.comIn scope2026-11-14
blackandwhite.quip.comIn scope2026-11-14
blackberry.quip.comIn scope2026-11-14
www.blackberry.quip.comIn scope2026-11-14
blackbird.quip.comIn scope2026-11-14
blackboard.quip.comIn scope2026-11-14
blackbox.quip.comIn scope2026-11-14
blackcat.quip.comIn scope2026-11-14
blackhole.quip.comIn scope2026-11-14
blackjack.quip.comIn scope2026-11-14
blacklabel.quip.comIn scope2026-11-14
blacklist.quip.comIn scope2026-11-14
blackpearl.quip.comIn scope2026-11-14
blacksun.quip.comIn scope2026-11-14
blacky.quip.comIn scope2026-11-14
blade.quip.comIn scope2026-11-14
blade1.quip.comIn scope2026-11-14
blade10.quip.comIn scope2026-11-14
blade11.quip.comIn scope2026-11-14
blade13.quip.comIn scope2026-11-14
blade2.quip.comIn scope2026-11-14
blade3.quip.comIn scope2026-11-14
blade4.quip.comIn scope2026-11-14
blade5.quip.comIn scope2026-11-14
blade6.quip.comIn scope2026-11-14
blade7.quip.comIn scope2026-11-14
blade8.quip.comIn scope2026-11-14
blade9.quip.comIn scope2026-11-14
blago.quip.comIn scope2026-11-14
blah.quip.comIn scope2026-11-14
blake.quip.comIn scope2026-11-14
blanco.quip.comIn scope2026-11-14
blast.quip.comIn scope2026-11-14
blaster.quip.comIn scope2026-11-14
blaze.quip.comIn scope2026-11-14
blazer.quip.comIn scope2026-11-14
bleach.quip.comIn scope2026-11-14
blend.quip.comIn scope2026-11-14
blessing.quip.comIn scope2026-11-14
blik.quip.comIn scope2026-11-14
blink.quip.comIn scope2026-11-14
bliss.quip.comIn scope2026-11-14
blitz.quip.comIn scope2026-11-14
blizzard.quip.comIn scope2026-11-14
block.quip.comIn scope2026-11-14
blocked.quip.comIn scope2026-11-14
blog.quip.comIn scope2026-11-14
blog-dev.quip.comdevIn scope2026-11-14
autoconfig.blog.quip.comIn scope2026-11-14
autodiscover.blog.quip.commailIn scope2026-11-14
ftp.blog.quip.comdataIn scope2026-11-14
localhost.blog.quip.comdevIn scope2026-11-14
mail.blog.quip.commailIn scope2026-11-14
ns.blog.quip.comIn scope2026-11-14
tw.blog.quip.comIn scope2026-11-14
webdisk.blog.quip.comIn scope2026-11-14
blog1.quip.comIn scope2026-11-14
blog2.quip.comIn scope2026-11-14
blog3.quip.comIn scope2026-11-14
blogdev.quip.comIn scope2026-11-14
blogg.quip.comIn scope2026-11-14
blogger.quip.comIn scope2026-11-14
blogs.quip.comIn scope2026-11-14
autoconfig.blogs.quip.comIn scope2026-11-14
autodiscover.blogs.quip.commailIn scope2026-11-14
webdisk.blogs.quip.comIn scope2026-11-14
www.blogs.quip.comIn scope2026-11-14
blogtest.quip.comIn scope2026-11-14
blondie.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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Updated