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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
caldav.quip.comIn scope2026-11-14
caldera.quip.comIn scope2026-11-14
calendar.quip.comIn scope2026-11-14
www.calendar.quip.comIn scope2026-11-14
calendario.quip.comIn scope2026-11-14
calgary.quip.comIn scope2026-11-14
california.quip.comIn scope2026-11-14
www.california.quip.comIn scope2026-11-14
calipso.quip.comIn scope2026-11-14
call.quip.comIn scope2026-11-14
callback.quip.comIn scope2026-11-14
callcenter.quip.comIn scope2026-11-14
calliope.quip.comIn scope2026-11-14
callisto.quip.comIn scope2026-11-14
callme.quip.comIn scope2026-11-14
callpilot.quip.comIn scope2026-11-14
calls.quip.comIn scope2026-11-14
calvin.quip.comIn scope2026-11-14
calypso.quip.comIn scope2026-11-14
cam.quip.comIn scope2026-11-14
www.cam.quip.comIn scope2026-11-14
cam1.quip.comIn scope2026-11-14
cam2.quip.comIn scope2026-11-14
cam3.quip.comIn scope2026-11-14
cam4.quip.comIn scope2026-11-14
camaras.quip.comIn scope2026-11-14
cambodia.quip.comIn scope2026-11-14
cambridge.quip.comIn scope2026-11-14
camel.quip.comIn scope2026-11-14
camera.quip.comIn scope2026-11-14
camera1.quip.comIn scope2026-11-14
camera2.quip.comIn scope2026-11-14
camera3.quip.comIn scope2026-11-14
cameras.quip.comIn scope2026-11-14
camfrog.quip.comIn scope2026-11-14
camilla.quip.comIn scope2026-11-14
camp.quip.comIn scope2026-11-14
campaign.quip.comIn scope2026-11-14
www.campaign.quip.comIn scope2026-11-14
campaigns.quip.comIn scope2026-11-14
camper.quip.comIn scope2026-11-14
camping.quip.comIn scope2026-11-14
campus.quip.comIn scope2026-11-14
campus2.quip.comIn scope2026-11-14
campusvirtual.quip.comIn scope2026-11-14
cams.quip.comIn scope2026-11-14
www.cams.quip.comIn scope2026-11-14
camus.quip.comIn scope2026-11-14
can.quip.comIn scope2026-11-14
canada.quip.comIn scope2026-11-14
canal.quip.comIn scope2026-11-14
canary.quip.comstagingIn scope2026-11-14
cancel.quip.comIn scope2026-11-14
cancer.quip.comIn scope2026-11-14
candle.quip.comIn scope2026-11-14
candw.quip.comIn scope2026-11-14
canna.quip.comIn scope2026-11-14
cannes.quip.comIn scope2026-11-14
canoe.quip.comIn scope2026-11-14
canon.quip.comIn scope2026-11-14
canopus.quip.comIn scope2026-11-14
canopy.quip.comIn scope2026-11-14
cantor.quip.comIn scope2026-11-14
canvas.quip.comIn scope2026-11-14
canvas8.quip.comIn scope2026-11-14
caos.quip.comIn scope2026-11-14
cap.quip.comIn scope2026-11-14
capa.quip.comIn scope2026-11-14
capacitacion.quip.comIn scope2026-11-14
capella.quip.comIn scope2026-11-14
capital.quip.comIn scope2026-11-14
capital-square-1031-exchange.quip.commailIn scope2026-11-14
cappslaw.quip.comIn scope2026-11-14
capricorn.quip.comIn scope2026-11-14
capstonefire.quip.comIn scope2026-11-14
captain.quip.comIn scope2026-11-14
captcha.quip.comIn scope2026-11-14
car.quip.comIn scope2026-11-14
car-line.quip.comIn scope2026-11-14
www.car-line.quip.comIn scope2026-11-14
www.car.quip.comIn scope2026-11-14
caracas.quip.comIn scope2026-11-14
caramel.quip.comIn scope2026-11-14
caramengobatitipes.quip.comIn scope2026-11-14
caravan.quip.comIn scope2026-11-14
carbon.quip.comIn scope2026-11-14
card.quip.comIn scope2026-11-14
webdisk.card.quip.comIn scope2026-11-14
www.card.quip.comIn scope2026-11-14
cardinal.quip.comIn scope2026-11-14
cards.quip.comIn scope2026-11-14
www.cards.quip.comIn scope2026-11-14
care.quip.comIn scope2026-11-14
career.quip.comIn scope2026-11-14
careers.quip.comIn scope2026-11-14
www.careers.quip.comIn scope2026-11-14
carfit.quip.comIn scope2026-11-14
cargo.quip.comIn scope2026-11-14
carina.quip.comIn scope2026-11-14
carl.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