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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:Old and legacy
First seen
Text fileClear filters147 names
Subdomains of Reddit
NameScopeFirst seen
archive.reddit.comlegacyIn scope2026-11-14
autoconfig.archive.reddit.comlegacyIn scope2026-11-14
autodiscover.archive.reddit.comlegacy, mailIn scope2026-11-14
webdisk.archive.reddit.comlegacyIn scope2026-11-14
www.archive.reddit.comlegacyIn scope2026-11-14
bak.reddit.comlegacyIn scope2026-11-14
bak7.reddit.comlegacyIn scope2026-11-14
classic.reddit.comlegacyIn scope2026-11-14
covid19-old.reddit.comlegacyIn scope2026-11-14
legacy.reddit.comlegacyIn scope2026-11-14
qa.legacy.reddit.comlegacy, testIn scope2026-11-14
www.legacy.reddit.comlegacyIn scope2026-11-14
mail-old.reddit.comlegacy, mailIn scope2026-11-14
old.reddit.comlegacyIn scope2026-11-14
old-www.reddit.comlegacyIn scope2026-11-14
_dmarc.old.reddit.comlegacyIn scope2026-11-14
_mta-sts.old.reddit.comlegacyIn scope2026-11-14
a.old.reddit.comlegacyIn scope2026-11-14
admin.old.reddit.comadmin, legacyIn scope2026-11-14
api.old.reddit.comapi, legacyIn scope2026-11-14
app.old.reddit.comlegacyIn scope2026-11-14
autoconfig.old.reddit.comlegacyIn scope2026-11-14
autodiscover.old.reddit.comlegacy, mailIn scope2026-11-14
b.old.reddit.comlegacyIn scope2026-11-14
bbs.old.reddit.comlegacyIn scope2026-11-14
beta.old.reddit.comlegacy, stagingIn scope2026-11-14
blog.old.reddit.comlegacyIn scope2026-11-14
builder.old.reddit.comlegacyIn scope2026-11-14
c.old.reddit.comlegacyIn scope2026-11-14
careers.old.reddit.comlegacyIn scope2026-11-14
cdn.old.reddit.comlegacyIn scope2026-11-14
citrix.old.reddit.comlegacy, vpnIn scope2026-11-14
cloud.old.reddit.comlegacyIn scope2026-11-14
cname.old.reddit.comlegacyIn scope2026-11-14
cp.old.reddit.comlegacyIn scope2026-11-14
cpanel.old.reddit.comadmin, legacyIn scope2026-11-14
crm.old.reddit.comlegacyIn scope2026-11-14
de.old.reddit.comlegacyIn scope2026-11-14
demo.old.reddit.comlegacy, testIn scope2026-11-14
dev.old.reddit.comdev, legacyIn scope2026-11-14
dnm.old.reddit.comlegacyIn scope2026-11-14
dns.old.reddit.comlegacyIn scope2026-11-14
dns1.old.reddit.comlegacyIn scope2026-11-14
dns2.old.reddit.comlegacyIn scope2026-11-14
docker.old.reddit.comlegacy, toolsIn scope2026-11-14
download.old.reddit.comlegacyIn scope2026-11-14
dyn.old.reddit.comlegacyIn scope2026-11-14
elastic.old.reddit.comdata, legacyIn scope2026-11-14
email.old.reddit.comlegacyIn scope2026-11-14
en.old.reddit.comlegacyIn scope2026-11-14
exchange.old.reddit.comlegacy, mailIn scope2026-11-14
forum.old.reddit.comlegacyIn scope2026-11-14
ftp.old.reddit.comdata, legacyIn scope2026-11-14
fw.old.reddit.comlegacyIn scope2026-11-14
git.old.reddit.comgit, legacyIn scope2026-11-14
gitlab.old.reddit.comgit, legacyIn scope2026-11-14
go.old.reddit.comlegacyIn scope2026-11-14
gw.old.reddit.comlegacyIn scope2026-11-14
help.old.reddit.comlegacyIn scope2026-11-14
home.old.reddit.comlegacyIn scope2026-11-14
host.old.reddit.comlegacyIn scope2026-11-14
hostmaster.old.reddit.comlegacyIn scope2026-11-14
images.old.reddit.comlegacyIn scope2026-11-14
imap.old.reddit.comlegacy, mailIn scope2026-11-14
img.old.reddit.comlegacyIn scope2026-11-14
inbound.old.reddit.comlegacyIn scope2026-11-14
info.old.reddit.comlegacyIn scope2026-11-14
ip.old.reddit.comlegacyIn scope2026-11-14
ipv6.old.reddit.comlegacyIn scope2026-11-14
k8s.old.reddit.comlegacy, toolsIn scope2026-11-14
kubernetes.old.reddit.comlegacy, toolsIn scope2026-11-14
lists.old.reddit.comlegacyIn scope2026-11-14
liveupdate.old.reddit.comlegacyIn scope2026-11-14
localhost.old.reddit.comdev, legacyIn scope2026-11-14
login.old.reddit.comauth, legacyIn scope2026-11-14
mail.old.reddit.comlegacy, mailIn scope2026-11-14
mail1.old.reddit.comlegacy, mailIn scope2026-11-14
mail2.old.reddit.comlegacy, mailIn scope2026-11-14
mailserver.old.reddit.comlegacyIn scope2026-11-14
mdm.old.reddit.comlegacyIn scope2026-11-14
media.old.reddit.comlegacyIn scope2026-11-14
ml.old.reddit.comlegacyIn scope2026-11-14
mobile.old.reddit.comlegacyIn scope2026-11-14
mongo.old.reddit.comdata, legacyIn scope2026-11-14
mongodb.old.reddit.comdata, legacyIn scope2026-11-14
mta-sts.old.reddit.comlegacyIn scope2026-11-14
mx.old.reddit.comlegacy, mailIn scope2026-11-14
mx01.old.reddit.comlegacyIn scope2026-11-14
mx1.old.reddit.comlegacyIn scope2026-11-14
mx2.old.reddit.comlegacyIn scope2026-11-14
mysql.old.reddit.comdata, legacyIn scope2026-11-14
new.old.reddit.comlegacyIn scope2026-11-14
news.old.reddit.comlegacyIn scope2026-11-14
ns.old.reddit.comlegacyIn scope2026-11-14
ns1.old.reddit.comlegacyIn scope2026-11-14
ns2.old.reddit.comlegacyIn scope2026-11-14
ns3.old.reddit.comlegacyIn scope2026-11-14
ns4.old.reddit.comlegacyIn scope2026-11-14
office.old.reddit.comlegacyIn scope2026-11-14
old.old.reddit.comlegacyIn 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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