CVE-2026-39579
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 Privilege Escalation in B Blocks <= 2.0.31 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 privilege escalation vulnerability in the B Blocks WordPress plugin where users with the contributor role can elevate their privileges to higher administrative levels. The vulnerability allows contributor-level users to perform actions that should be restricted to administrators or other higher-privileged roles.
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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify if B Blocks plugin is installedLog in to WordPress admin panel and navigate to Plugins > Installed Plugins. Look for 'B Blocks' in the list of active plugins.Affected if B Blocks plugin appears in the installed plugins list, regardless of activation status
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Check the installed version of B BlocksIn the WordPress admin, go to Plugins > Installed Plugins. Locate B Blocks and view the version number displayed beneath the plugin name. Compare this version to any officially released patched versions from the plugin developer.Affected if The installed version is older than the latest patched version, or no patched version information is available
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Verify contributor role users existIn WordPress admin, navigate to Users > All Users. Review the list to identify any users assigned the 'Contributor' role.Affected if At least one user account with Contributor role exists on the site
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Check if B Blocks functionality is accessible to contributorsLog in as a Contributor user account and attempt to access the B Blocks plugin settings or content creation features within the WordPress admin. Alternatively, review the plugin's role capability settings if exposed in the admin interface.Affected if Contributor-level users can access B Blocks features that allow content publishing or administrative-level actions
The environment is affected if the B Blocks plugin is installed, contributors exist on the site, and the plugin permits contributors access to elevated capabilities or administrative functions.
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.
dbcve · scopedUpdate B Blocks to the latest version if a patch is available. If no patch exists, remove the plugin or implement role-based access control restrictions at the server level until a fix is released.
B Blocks version 2.0.32 or latest available version
- Log in to the WordPress admin dashboard
- Navigate to Plugins > Installed Plugins
- Locate the B Blocks plugin
- If an update is available, click 'Update Now' to update to the latest version
- Verify the update was successful by checking the plugin version is greater than 2.0.31
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2026-39579 — 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-2026-39579 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