CVE-2023-51498
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 · uneditedMissing Authorization vulnerability in Woo WooCommerce Canada Post Shipping.This issue affects WooCommerce Canada Post Shipping: from n/a through 2.8.3.
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 confidenceMissing Authorization vulnerability in WooCommerce Canada Post Shipping plugin allows unauthenticated users to access or perform shipping-related actions without proper capability checks. The CVSS metrics (PR:N, UI:N, AV:N, AC:L) indicate the attack can be carried out over the network without any privileges or user interaction.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Confirm WooCommerce Canada Post Shipping plugin is installedNavigate to WordPress admin > Plugins and locate 'WooCommerce Canada Post Shipping' in the plugin list, or check the /wp-content/plugins/ directory for the canada-post-shipping folderAffected if The plugin is present in the installation
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Verify the plugin versionIn WordPress admin > Plugins, click on the plugin to view details and note the installed version number, then compare against any official security advisory versionAffected if The installed version is older than the patched version listed in the security release notes
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Confirm the plugin is activeCheck the Plugins list in WordPress admin - the plugin status should show as 'Active'Affected if The plugin is activated and running on the site
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Test for unauthenticated access to shipping endpointsUse a tool like curl or Burp Suite to send requests to common plugin AJAX endpoints (such as /wp-admin/admin-ajax.php?action=canada_post_shipping_*) without providing authentication cookies or credentialsAffected if The requests return successful responses without requiring login or capability verification
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Review server access logs for shipping label requestsExamine web server access logs (Apache/nginx) for POST requests to the plugin's shipping endpoints originating from IP addresses without corresponding admin or authenticated sessions in the logsAffected if Shipping-related actions are logged from unauthenticated or anonymous IP addresses
The environment is affected if the WooCommerce Canada Post Shipping plugin is installed, active, and running an unpatched version that allows unauthenticated users to access shipping functionality.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataUpdate to the latest version of the WooCommerce Canada Post Shipping plugin once available. In the interim, restrict access to the affected endpoints at the web server level and monitor for unauthorized shipping label requests.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-51498 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-51498 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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