CVE-2026-57429
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 · uneditedContributor Broken Access Control in Slim SEO <= 4.6.2 versions.
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 confidenceThis is a broken access control vulnerability in the Slim SEO WordPress plugin affecting versions 4.6.2 and below. Users with the 'contributor' role (who normally can only create but not publish content) can likely access or perform administrative functions they should not have permission to access, due to insufficient capability checks in the plugin code.
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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Confirm Slim SEO plugin is installedLog into WordPress admin dashboard and navigate to Plugins > Installed Plugins. Look for 'Slim SEO' in the plugin list. Alternatively, check if the /wp-content/plugins/ directory contains a folder named 'slim-seo' or similar.Affected if Slim SEO plugin is present in the WordPress installation
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Check installed Slim SEO versionIn WordPress admin, go to Plugins > Installed Plugins and find Slim SEO. The version number is displayed below the plugin name. Compare this version to 4.6.2.Affected if The installed version is 4.6.2 or lower
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Verify contributor role users existIn WordPress admin, go to Users > All Users. Look for any users assigned the 'Contributor' role. Note the number and usernames of contributor users.Affected if There is at least one user with the Contributor role assigned
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Check contributor role capabilitiesNavigate to Users > Roles (or use a role editor plugin if installed). Examine the capabilities assigned to the Contributor role. Look for any administrative or publish-related capabilities that contributors should not have.Affected if Contributor role has capabilities beyond 'read', 'edit_posts', and 'delete_posts' (such as 'manage_options', 'edit_users', 'install_plugins', or publish capabilities)
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Inspect plugin for admin function accessIf you have file access, examine the Slim SEO plugin files in wp-content/plugins/ for function calls checking user capabilities. Look for code sections that perform capability checks (using functions like current_user_can, wp_verify_nonce) and note if contributor role is properly excluded from admin-level functions.Affected if Plugin code allows contributor role users to access or execute functions intended for administrator roles
You are affected if Slim SEO plugin version 4.6.2 or lower is installed AND at least one contributor role user exists in your WordPress environment.
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 Slim SEO plugin to a version newer than 4.6.2. If no update is available, consider restricting contributor role capabilities or disabling the plugin until a patch is released.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57429 — 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-2026-57429 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