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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
box.quip.comIn scope2026-11-14
box1.quip.comIn scope2026-11-14
box11.quip.comIn scope2026-11-14
box2.quip.comIn scope2026-11-14
boxer.quip.comIn scope2026-11-14
boxoffice.quip.comIn scope2026-11-14
bp.quip.comIn scope2026-11-14
bpa.quip.comIn scope2026-11-14
bpkn.quip.comIn scope2026-11-14
bpm.quip.comIn scope2026-11-14
br.quip.comIn scope2026-11-14
www.br.quip.comIn scope2026-11-14
br1.quip.comIn scope2026-11-14
br6spt.quip.comIn scope2026-11-14
brad.quip.comIn scope2026-11-14
brahms.quip.comIn scope2026-11-14
brain.quip.comIn scope2026-11-14
brains.quip.comIn scope2026-11-14
brainstorm.quip.comIn scope2026-11-14
branch.quip.comIn scope2026-11-14
brand.quip.comIn scope2026-11-14
brandon.quip.comIn scope2026-11-14
brasil.quip.comIn scope2026-11-14
brave.quip.comIn scope2026-11-14
bravo.quip.comIn scope2026-11-14
brazil.quip.comIn scope2026-11-14
brazzers.quip.comIn scope2026-11-14
bread.quip.comIn scope2026-11-14
breeze.quip.comIn scope2026-11-14
breezy.quip.comIn scope2026-11-14
brest.quip.comIn scope2026-11-14
brett.quip.comIn scope2026-11-14
brian.quip.comIn scope2026-11-14
bridge.quip.comIn scope2026-11-14
www.bridge.quip.comIn scope2026-11-14
brief.quip.comIn scope2026-11-14
bright.quip.comIn scope2026-11-14
brighton.quip.comIn scope2026-11-14
brilliant.quip.comIn scope2026-11-14
brisbane.quip.comIn scope2026-11-14
britney.quip.comIn scope2026-11-14
britneyspears.quip.comIn scope2026-11-14
broadcast.quip.comIn scope2026-11-14
broadly.quip.comIn scope2026-11-14
broadway.quip.comIn scope2026-11-14
broker.quip.comIn scope2026-11-14
bronx.quip.comIn scope2026-11-14
bronze.quip.comIn scope2026-11-14
brother.quip.comIn scope2026-11-14
brothers.quip.comIn scope2026-11-14
brown.quip.comIn scope2026-11-14
browse.quip.comIn scope2026-11-14
browser.quip.comIn scope2026-11-14
browsersupport.quip.comIn scope2026-11-14
brs.quip.comIn scope2026-11-14
bru.quip.comIn scope2026-11-14
bruce.quip.comIn scope2026-11-14
bruno.quip.comIn scope2026-11-14
brutus.quip.comIn scope2026-11-14
bryan.quip.comIn scope2026-11-14
bryansk.quip.comIn scope2026-11-14
bs.quip.comIn scope2026-11-14
bsa.quip.comIn scope2026-11-14
bsc.quip.comIn scope2026-11-14
bscw.quip.comIn scope2026-11-14
bsd.quip.comIn scope2026-11-14
bsd1.quip.comIn scope2026-11-14
bsf.quip.comIn scope2026-11-14
bsh.quip.comIn scope2026-11-14
bsm.quip.comIn scope2026-11-14
bss.quip.comIn scope2026-11-14
bt.quip.comIn scope2026-11-14
www.bt.quip.comIn scope2026-11-14
btc.quip.comIn scope2026-11-14
btp.quip.comIn scope2026-11-14
bts.quip.comIn scope2026-11-14
btv.quip.comIn scope2026-11-14
bu.quip.comIn scope2026-11-14
bubba.quip.comIn scope2026-11-14
bubble.quip.comIn scope2026-11-14
bubbles.quip.comIn scope2026-11-14
bubu.quip.comIn scope2026-11-14
buchanan-williams-o-brien-p-c.quip.comIn scope2026-11-14
buck.quip.comIn scope2026-11-14
budapest.quip.comIn scope2026-11-14
buddha.quip.comIn scope2026-11-14
buddy.quip.comIn scope2026-11-14
budget.quip.comIn scope2026-11-14
budget-test.quip.comtestIn scope2026-11-14
buffalo.quip.comIn scope2026-11-14
bug.quip.comIn scope2026-11-14
www.bug.quip.comIn scope2026-11-14
bugatti.quip.comIn scope2026-11-14
bugs.quip.comIn scope2026-11-14
webdisk.bugs.quip.comIn scope2026-11-14
www.bugs.quip.comIn scope2026-11-14
bugtrack.quip.comIn scope2026-11-14
bugtracker.quip.comIn scope2026-11-14
bugzilla.quip.comIn scope2026-11-14
build.quip.comciIn 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