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Bug bounty program

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

Subdomains of Reddit
NameScopeFirst seen
aragorn.reddit.comIn scope2026-11-14
aramis.reddit.comIn scope2026-11-14
aras.reddit.comIn scope2026-11-14
arc.reddit.comIn scope2026-11-14
arcade.reddit.comIn scope2026-11-14
arcadia.reddit.comIn scope2026-11-14
arcgis.reddit.comIn scope2026-11-14
arch.reddit.comIn scope2026-11-14
csr21.arch.reddit.comIn scope2026-11-14
archangel.reddit.comIn scope2026-11-14
archer.reddit.comIn scope2026-11-14
architecture.reddit.comIn scope2026-11-14
archiv.reddit.comIn scope2026-11-14
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
archives.reddit.comIn scope2026-11-14
www.archives.reddit.comIn scope2026-11-14
archivio.reddit.comIn scope2026-11-14
archivo.reddit.comIn scope2026-11-14
archiwum.reddit.comIn scope2026-11-14
archlinux.reddit.comIn scope2026-11-14
arctest.reddit.comIn scope2026-11-14
arctic.reddit.comIn scope2026-11-14
arcturus.reddit.comIn scope2026-11-14
arda.reddit.comIn scope2026-11-14
arduino.reddit.comIn scope2026-11-14
area.reddit.comIn scope2026-11-14
area51.reddit.comIn scope2026-11-14
arena.reddit.comIn scope2026-11-14
ares.reddit.comIn scope2026-11-14
arg.reddit.comIn scope2026-11-14
argentina.reddit.comIn scope2026-11-14
argo.reddit.comciIn scope2026-11-14
argon.reddit.comIn scope2026-11-14
argos.reddit.comIn scope2026-11-14
argus.reddit.comIn scope2026-11-14
arhangelsk.reddit.comIn scope2026-11-14
arhiva.reddit.comIn scope2026-11-14
ari.reddit.comIn scope2026-11-14
aria.reddit.comIn scope2026-11-14
ariadne.reddit.comIn scope2026-11-14
ariana.reddit.comIn scope2026-11-14
ariane.reddit.comIn scope2026-11-14
arie.reddit.comIn scope2026-11-14
ariel.reddit.comIn scope2026-11-14
aries.reddit.comIn scope2026-11-14
arif.reddit.comIn scope2026-11-14
arion.reddit.comIn scope2026-11-14
arirang.reddit.comIn scope2026-11-14
aris.reddit.comIn scope2026-11-14
arizona.reddit.comIn scope2026-11-14
arizonawildcats.reddit.comIn scope2026-11-14
arjuna.reddit.comIn scope2026-11-14
ark.reddit.comIn scope2026-11-14
arkansas.reddit.comIn scope2026-11-14
arm.reddit.comIn scope2026-11-14
www.arm.reddit.comIn scope2026-11-14
arma.reddit.comIn scope2026-11-14
armada.reddit.comIn scope2026-11-14
armageddon.reddit.comIn scope2026-11-14
armani.reddit.comIn scope2026-11-14
armstrong.reddit.comIn scope2026-11-14
army.reddit.comIn scope2026-11-14
arnold.reddit.comIn scope2026-11-14
aroma.reddit.comIn scope2026-11-14
arp.reddit.comIn scope2026-11-14
arquivos.reddit.comIn scope2026-11-14
arrakis.reddit.comIn scope2026-11-14
arrow.reddit.comIn scope2026-11-14
ars.reddit.comIn scope2026-11-14
arsenal.reddit.comIn scope2026-11-14
arsenic.reddit.comIn scope2026-11-14
arslan.reddit.comIn scope2026-11-14
art.reddit.comIn scope2026-11-14
www.art.reddit.comIn scope2026-11-14
arte.reddit.comIn scope2026-11-14
artefact.reddit.comIn scope2026-11-14
artefactporn.reddit.comIn scope2026-11-14
artem.reddit.comIn scope2026-11-14
artemis.reddit.comIn scope2026-11-14
arthouse.reddit.comIn scope2026-11-14
arthur.reddit.comIn scope2026-11-14
article.reddit.comIn scope2026-11-14
www.article.reddit.comIn scope2026-11-14
articles.reddit.comIn scope2026-11-14
webdisk.articles.reddit.comIn scope2026-11-14
www.articles.reddit.comIn scope2026-11-14
artificial.reddit.comIn scope2026-11-14
artis.reddit.comIn scope2026-11-14
artist.reddit.comIn scope2026-11-14
arts.reddit.comIn scope2026-11-14
artstore.reddit.comIn scope2026-11-14
artur.reddit.comIn scope2026-11-14
artwork.reddit.comIn scope2026-11-14
aruba-master.reddit.comIn scope2026-11-14
arun.reddit.comIn scope2026-11-14
arwen.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.