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Bug bounty program

RE

Reddit

Open on HackerOneAtlas
Platform
HackerOne
Bounties
Pays
Assets in scope
27
Disclosed reports
72
Subdomains
23,159
Vendor on CyberSIXT
Reddit (1 CVE, 0 exploited)

Most upvoted reports72

All reports
Most upvoted reports of Reddit
ReportWeaknessDisclosedBountyVotes
One-click account hijack for anyone using Apple sign-in with Reddit, due to response-type switch + leaking href to XSS on www.redditmedia.comAnalysed#1567186Access Control2022-08-02–509
[accounts.reddit.com] Redirect parameter allows for XSSAnalysed#1962645Cross-site Scripting2023-05-18$5,000394
Blind SSRF to internal services in matrix preview_link APIAnalysed#1960765Server-Side Request Forgery2023-04-26$6,000344
Exposed proxy allows to access internal reddit domainsAnalysed#2967634Access Control2025-02-24$7,500296
RichText parser vulnerability in scheduled posts allows XSSAnalysed#1930763Cross-site Scripting2023-04-20$5,000280
Deleting all DMs on RedditGifts.comAnalysed#1213237Insecure Direct Object Reference2021-10-21$5,000267
Infromation Disclosure To Use of Hard-coded Cryptographic Key#2353237Cryptography2024-02-06–238
XSS via Mod Log Removed PostsAnalysed#1504410Cross-site Scripting2022-03-10–218
IDOR allows an attacker to modify the links of any userAnalysed#1661113Insecure Direct Object Reference2022-09-30–208
Able to bypass email verification and change email to any other user emailAnalysed#1551176Access Control2022-05-06$5,000200

Subdomains23,159

Root
Scope
Name suggests
First seen
Text file23,159 names
Subdomains of Reddit
NameScopeFirst seen
bid.reddit.comIn scope2026-11-14
biel.reddit.comIn scope2026-11-14
big.reddit.comIn scope2026-11-14
big5.reddit.comIn scope2026-11-14
bigbang.reddit.comIn scope2026-11-14
bigben.reddit.comIn scope2026-11-14
bigbrother.reddit.comIn scope2026-11-14
bigdog.reddit.comIn scope2026-11-14
bigmac.reddit.comIn scope2026-11-14
bigtits.reddit.comIn scope2026-11-14
bike.reddit.comIn scope2026-11-14
bikini.reddit.comIn scope2026-11-14
bilal.reddit.comIn scope2026-11-14
bilbo.reddit.comIn scope2026-11-14
bilder.reddit.comIn scope2026-11-14
bilet.reddit.comIn scope2026-11-14
bill.reddit.comIn scope2026-11-14
www.bill.reddit.comIn scope2026-11-14
bill2.reddit.comIn scope2026-11-14
billing.reddit.comIn scope2026-11-14
autoconfig.billing.reddit.comIn scope2026-11-14
autodiscover.billing.reddit.commailIn scope2026-11-14
webdisk.billing.reddit.comIn scope2026-11-14
www.billing.reddit.comIn scope2026-11-14
billing1.reddit.comIn scope2026-11-14
billing2.reddit.comIn scope2026-11-14
billpay.reddit.comIn scope2026-11-14
bills.reddit.comIn scope2026-11-14
billy.reddit.comIn scope2026-11-14
bim.reddit.comIn scope2026-11-14
bin.reddit.comIn scope2026-11-14
binary.reddit.comIn scope2026-11-14
bindingofisaac.reddit.comIn scope2026-11-14
bindu.reddit.comIn scope2026-11-14
bingo.reddit.comIn scope2026-11-14
bio.reddit.comIn scope2026-11-14
www.bio.reddit.comIn scope2026-11-14
bioinfo.reddit.comIn scope2026-11-14
biologie.reddit.comIn scope2026-11-14
biology.reddit.comIn scope2026-11-14
bioshock.reddit.comIn scope2026-11-14
biotech.reddit.comIn scope2026-11-14
www.biotech.reddit.comIn scope2026-11-14
bip.reddit.comIn scope2026-11-14
www.bip.reddit.comIn scope2026-11-14
bird.reddit.comIn scope2026-11-14
birds.reddit.comIn scope2026-11-14
birmingham.reddit.comIn scope2026-11-14
birthday.reddit.comIn scope2026-11-14
bis.reddit.comIn scope2026-11-14
bisexual.reddit.comIn scope2026-11-14
bismarck.reddit.comIn scope2026-11-14
bison.reddit.comIn scope2026-11-14
bit.reddit.comIn scope2026-11-14
bitcoin.reddit.comIn scope2026-11-14
bitfinex.reddit.comIn scope2026-11-14
bitrix.reddit.comIn scope2026-11-14
bits.reddit.comIn scope2026-11-14
bittit.reddit.comIn scope2026-11-14
bitvote.reddit.comIn scope2026-11-14
biuro.reddit.comIn scope2026-11-14
biyou.reddit.comIn scope2026-11-14
biz.reddit.comIn scope2026-11-14
www.biz.reddit.comIn scope2026-11-14
biznes.reddit.comIn scope2026-11-14
bj.reddit.comIn scope2026-11-14
bk.reddit.comIn scope2026-11-14
bk01.reddit.comIn scope2026-11-14
bk1.reddit.comIn scope2026-11-14
bk2.reddit.comIn scope2026-11-14
bk3.reddit.comIn scope2026-11-14
bkm.reddit.comIn scope2026-11-14
bkp.reddit.comIn scope2026-11-14
bks.reddit.comIn scope2026-11-14
bl.reddit.comIn scope2026-11-14
www.bl.reddit.comIn scope2026-11-14
bla.reddit.comIn scope2026-11-14
black.reddit.comIn scope2026-11-14
black-mask1.reddit.comIn scope2026-11-14
blackandwhite.reddit.comIn scope2026-11-14
blackberry.reddit.comIn scope2026-11-14
www.blackberry.reddit.comIn scope2026-11-14
blackbird.reddit.comIn scope2026-11-14
blackboard.reddit.comIn scope2026-11-14
blackbookgraffiti.reddit.comIn scope2026-11-14
blackbox.reddit.comIn scope2026-11-14
blackcat.reddit.comIn scope2026-11-14
blackhole.reddit.comIn scope2026-11-14
blackjack.reddit.comIn scope2026-11-14
blacklabel.reddit.comIn scope2026-11-14
blacklist.reddit.comIn scope2026-11-14
blackorwhite.reddit.comIn scope2026-11-14
blackpearl.reddit.comIn scope2026-11-14
blacksun.reddit.comIn scope2026-11-14
blacksurvival.reddit.comIn scope2026-11-14
blacky.reddit.comIn scope2026-11-14
blade.reddit.comIn scope2026-11-14
blade1.reddit.comIn scope2026-11-14
blade10.reddit.comIn scope2026-11-14
blade11.reddit.comIn scope2026-11-14

23,064 names are covered by the program's own scope; 0 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