CVE-2026-57418
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 BoldGrid Client Invoicing by Sprout Invoices sprout-invoices allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Client Invoicing by Sprout Invoices: from n/a through <= 20.8.13.
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 confidenceThe BoldGrid Client Invoicing by Sprout Invoices WordPress plugin <= 20.8.13 contains a missing authorization vulnerability that allows attackers to exploit incorrectly configured access control security levels. This likely enables unauthorized users to access privileged functionality or resources that should require higher-level permissions.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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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Check installed plugin versionNavigate to WordPress admin > Plugins > Installed Plugins and locate 'BoldGrid Client Invoicing by Sprout Invoices' or check the plugin header in its main PHP file for the 'Version' propertyAffected if The installed version is 20.8.13 or lower
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Verify user role access to plugin admin pagesLog in with a low-privilege user role (e.g., Subscriber) and attempt to access the plugin's admin pages or settings panel at /wp-admin/admin.php?page=sprout-invoices or similar routes under 'Sprout Invoices'Affected if The user can access plugin admin pages or settings without proper capability checks being enforced
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Inspect AJAX endpoint accessibilityUse a browser proxy or curl to send unauthenticated or low-privilege AJAX requests to wp-admin/admin-ajax.php with actions related to the plugin (search for 'si_' or 'sprout_invoices' action parameters)Affected if The AJAX endpoints return successful responses for users lacking administrative capabilities
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Review capability configurationExamine the plugin source code for current_user_capability checks or permission callbacks on sensitive functions, especially in files within the /includes/ or /controllers/ directoriesAffected if Sensitive functions lack current_user_can() or similar capability verification checks
If the plugin version is 20.8.13 or lower and unauthorized users can access admin functionality or privileged AJAX endpoints, the environment is affected by this CVE.
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 dataImplement proper capability checks and authorization verification on all sensitive functions and AJAX endpoints within the plugin to ensure users can only access resources permitted by their role.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57418 — 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-2026-57418 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
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