dbcve.org
Klarna For WoocommerceWordPress extension · Klarna

CVE-2024-30477

CRITICAL · 9.8 CVSS v3.1 Published 2024-03-29
Fix available
A fix is available. Upgrade to after 3.2.4 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Missing Authorization vulnerability in Klarna Klarna Payments for WooCommerce.This issue affects Klarna Payments for WooCommerce: from n/a through 3.2.4.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A critical missing authorization vulnerability in Klarna Payments for WooCommerce versions up to 3.2.4 allows unauthenticated attackers to bypass access controls, potentially leading to unauthorized access to payment processing functions or sensitive data. The CVSS 9.8 score indicates complete compromise of confidentiality, integrity, and availability with no user interaction required.

MitigationUpdate Klarna Payments for WooCommerce to the latest version (3.2.5 or later) which contains the authorization fix. If an update is unavailable, temporarily disable the plugin until a patched version is released.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Klarna For WoocommerceWordPress extension
Affected:<= 3.2.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Locate the Klarna Payments plugin installation path
    Check the WordPress plugins directory at wp-content/plugins/ for a folder named 'klarna-payments-for-woocommerce' or similar Klarna-related folders
    Affected if The plugin folder exists in the WordPress plugins directory
  2. Verify the installed plugin version
    Open the main plugin file (usually klarna-payments-for-woocommerce.php) and look for the 'Version' header in the plugin comment block, or check readme.txt for the version number
    Affected if The version number displayed is 3.2.4 or lower
  3. Confirm the plugin is active on the WooCommerce site
    Log into the WordPress admin dashboard, navigate to Plugins > Installed Plugins, and check if Klarna Payments for WooCommerce shows as 'Active'
    Affected if The plugin status shows as 'Active' and the version is 3.2.4 or lower

If the Klarna Payments for WooCommerce plugin is installed, active, and running version 3.2.4 or lower, the environment is affected by this authorization bypass vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 3.2.4
Interim mitigation

Update Klarna Payments for WooCommerce to the latest version (3.2.5 or later) which contains the authorization fix. If an update is unavailable, temporarily disable the plugin until a patched version is released.

Recommended fix Moderate confidence

Klarna Payments for WooCommerce version 3.2.5 or later (verify latest version on wordpress.org or Klarna documentation)

  1. 1. Log in to the WordPress admin dashboard
  2. 2. Navigate to Plugins > Installed Plugins
  3. 3. Find Klarna Payments for WooCommerce in the plugin list
  4. 4. Check the current version number to confirm it is 3.2.4 or lower
  5. 5. If an update is available, click 'Update Now' to install the latest version
  6. 6. After updating, verify the new version number in the plugins list
  7. 7. Test the checkout process to ensure Klarna payment functionality works correctly

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Klarna For Woocommerce Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,560
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,096.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-30477 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-30477 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data