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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
architecture.quip.comIn scope2026-11-14
archiv.quip.comIn scope2026-11-14
archive.quip.comlegacyIn scope2026-11-14
autoconfig.archive.quip.comlegacyIn scope2026-11-14
autodiscover.archive.quip.comlegacy, mailIn scope2026-11-14
webdisk.archive.quip.comlegacyIn scope2026-11-14
www.archive.quip.comlegacyIn scope2026-11-14
archives.quip.comIn scope2026-11-14
www.archives.quip.comIn scope2026-11-14
archivio.quip.comIn scope2026-11-14
archivo.quip.comIn scope2026-11-14
archiwum.quip.comIn scope2026-11-14
arctest.quip.comIn scope2026-11-14
arctic.quip.comIn scope2026-11-14
arcturus.quip.comIn scope2026-11-14
arda.quip.comIn scope2026-11-14
area.quip.comIn scope2026-11-14
area51.quip.comIn scope2026-11-14
arena.quip.comIn scope2026-11-14
ares.quip.comIn scope2026-11-14
arg.quip.comIn scope2026-11-14
argentina.quip.comIn scope2026-11-14
argo.quip.comciIn scope2026-11-14
argon.quip.comIn scope2026-11-14
argos.quip.comIn scope2026-11-14
argus.quip.comIn scope2026-11-14
arhangelsk.quip.comIn scope2026-11-14
arhiva.quip.comIn scope2026-11-14
ari.quip.comIn scope2026-11-14
aria.quip.comIn scope2026-11-14
ariadne.quip.comIn scope2026-11-14
ariana.quip.comIn scope2026-11-14
ariane.quip.comIn scope2026-11-14
arie.quip.comIn scope2026-11-14
ariel.quip.comIn scope2026-11-14
aries.quip.comIn scope2026-11-14
arif.quip.comIn scope2026-11-14
arion.quip.comIn scope2026-11-14
arirang.quip.comIn scope2026-11-14
aris.quip.comIn scope2026-11-14
arizona.quip.comIn scope2026-11-14
arjuna.quip.comIn scope2026-11-14
ark.quip.comIn scope2026-11-14
arkansas.quip.comIn scope2026-11-14
arm.quip.comIn scope2026-11-14
www.arm.quip.comIn scope2026-11-14
armada.quip.comIn scope2026-11-14
armageddon.quip.comIn scope2026-11-14
armani.quip.comIn scope2026-11-14
armstrong.quip.comIn scope2026-11-14
army.quip.comIn scope2026-11-14
arnold.quip.comIn scope2026-11-14
aroma.quip.comIn scope2026-11-14
arp.quip.comIn scope2026-11-14
arquivos.quip.comIn scope2026-11-14
arrakis.quip.comIn scope2026-11-14
arrow.quip.comIn scope2026-11-14
arrow-paint.quip.comIn scope2026-11-14
ars.quip.comIn scope2026-11-14
arsenal.quip.comIn scope2026-11-14
arsenic.quip.comIn scope2026-11-14
arslan.quip.comIn scope2026-11-14
art.quip.comIn scope2026-11-14
www.art.quip.comIn scope2026-11-14
arte.quip.comIn scope2026-11-14
artefact.quip.comIn scope2026-11-14
artem.quip.comIn scope2026-11-14
artemis.quip.comIn scope2026-11-14
arthouse.quip.comIn scope2026-11-14
arthur.quip.comIn scope2026-11-14
article.quip.comIn scope2026-11-14
www.article.quip.comIn scope2026-11-14
articles.quip.comIn scope2026-11-14
webdisk.articles.quip.comIn scope2026-11-14
www.articles.quip.comIn scope2026-11-14
artificialfootballpitch.quip.comIn scope2026-11-14
artificialfootballpitchuk.quip.comIn scope2026-11-14
artificialgrasscost.quip.comIn scope2026-11-14
artificialgrasssyntheticturfuk.quip.comIn scope2026-11-14
artificialpitchmaintenanceuk.quip.comIn scope2026-11-14
artificialrugbypitchesuk.quip.comIn scope2026-11-14
artificialturfpitch.quip.comIn scope2026-11-14
artis.quip.comIn scope2026-11-14
artist.quip.comIn scope2026-11-14
arts.quip.comIn scope2026-11-14
artsci.quip.comIn scope2026-11-14
artur.quip.comIn scope2026-11-14
artwork.quip.comIn scope2026-11-14
aruba-master.quip.comIn scope2026-11-14
arun.quip.comIn scope2026-11-14
arwen.quip.comIn scope2026-11-14
as.quip.comIn scope2026-11-14
as1.quip.comIn scope2026-11-14
as2.quip.comIn scope2026-11-14
as3.quip.comIn scope2026-11-14
as4.quip.comIn scope2026-11-14
as400.quip.comIn scope2026-11-14
asa.quip.comIn scope2026-11-14
asahi.quip.comIn scope2026-11-14
asap.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