Klarna bug bounty programs
klarna.com Updated
Klarna runs two public programs: a HackerOne bug bounty paying up to $7,000 and a self-hosted disclosure program with no cash rewards.
- Top reward
- $7,000
- HackerOne
- Programs
- 2
- 1 pays cash
- Targets in scope
- 10
- 5 types, deduplicated
- Last change
- None yet
- Tracked since Nov 2026
Where to report
2 programs, side by side. Report where the affected target is in scope; when two programs cover it, pick the one that pays more.
Start here
Klarna
HackerOne · Pays the most of the 2 programs: up to $7,000.
| Program | Critical | High | Medium | Low | Top reward | Safe harbor | KYC | First response | Status |
|---|---|---|---|---|---|---|---|---|---|
Klarna
HackerOne · Bug bounty |
$7,000 (highest) | $3,000 (highest) | $1,000 (highest) | $300 (highest) | $7,000 | Partial | – | 2 hours average | Open |
|
Klarna
Self-hosted · Disclosure only |
– | – | – | – | No cash | – | – | – | Open |
-
- Critical
- $7,000 (highest)
- High
- $3,000 (highest)
- Medium
- $1,000 (highest)
- Low
- $300 (highest)
- Safe harbor
- Partial
- First response
- 2 hours average
Amounts are the top reward per severity in the currency each program pays. Green marks the highest per severity. First response is the platform's measured average when it publishes one, else what the policy promises.
What is in scope
10 targets across all 2 programs, each listed once with the programs that cover it. 8 excluded.
No target matches. Try part of a host name, such as the company name.
Out of scope 8
Don't test these. A program can exclude a host another program covers; the program you report to decides.
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https://api-stage.pricerunner.com/swagger-ui.html
HackerOne
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https://api-us.pricerunner.com/swagger-ui.html
HackerOne
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https://api.pricerunner.com/swagger-ui.html
HackerOne
-
https://app.klarna.com/us/api/connected_card_bff
HackerOne
-
jobs.pricerunner.com
HackerOne
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locker.klarna.com
HackerOne
-
nuji.com
HackerOne
-
Kustom
HackerOne
Recent changes
Reward and scope changes across every Klarna program, newest first.
No changes recorded yet. New targets and reward moves show up here and in the RSS feed.
Recent CVEs
Published vulnerabilities in Klarna products, from the NVD.
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CVE-2024-13925 High
The Klarna Checkout for WooCommerce WordPress plugin before 2.13.5 exposes an unauthenticated WooCommerce Ajax endpoint that allows an attacker to flood the log files with data at the maximum size allowed for a POST parameter per request. This can result in rapid consumption of disk space, potentially filling the entire disk.
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CVE-2024-13925 High
The Klarna Checkout for WooCommerce WordPress plugin before 2.13.5 exposes an unauthenticated WooCommerce Ajax endpoint that allows an attacker to flood the log files with data at the maximum size allowed for a POST parameter per request. This can result in rapid consumption of disk space, potentially filling the entire disk.
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CVE-2024-30477 Medium
Missing Authorization vulnerability in Klarna Klarna Payments for WooCommerce.This issue affects Klarna Payments for WooCommerce: from n/a through 3.2.4.
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CVE-2024-30477 Medium
Missing Authorization vulnerability in Klarna Klarna Payments for WooCommerce.This issue affects Klarna Payments for WooCommerce: from n/a through 3.2.4.
About this page
This page gathers every public program listed under klarna.com: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.
Something wrong or missing? Report a correction.