dbcve.org
Blog2socialWordPress extension · Adenion

CVE-2023-40554

MEDIUM · 6.1 CVSS v3.1 Published 2023-09-06
Fix available
A fix is available. Upgrade to after 7.2.0 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Blog2Social, Adenion Blog2Social: Social Media Auto Post & Scheduler plugin <= 7.2.0 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 confidence

An unauthenticated reflected cross-site scripting (XSS) vulnerability exists in the Blog2Social WordPress plugin versions 7.2.0 and below. The vulnerability allows attackers to inject malicious JavaScript scripts through unsanitized user input that gets reflected back in the HTTP response, potentially executing in victim browsers.

MitigationUpdate to the latest patched version of Blog2Social. If no update is available, disable the plugin until a patch is released. As a temporary workaround, users should avoid clicking untrusted links to the affected site.

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
Blog2socialWordPress extension
Affected:<= 7.2.0

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
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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 checks

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

  1. Verify Blog2Social plugin installation and version
    In WordPress admin, go to Plugins > Installed Plugins and look for 'Blog2Social' or 'Adenion Blog2Social'. Check the version number displayed below the plugin name. Alternatively, inspect the plugin header in /wp-content/plugins/blog2social/includes/b2s-info.php or the main plugin file for the 'Version' header.
    Affected if The installed version is 7.2.0 or any version lower (e.g., 7.1.x, 7.0.x, etc.)
  2. Confirm the plugin is active
    In WordPress admin, go to Plugins > Installed Plugins and verify that Blog2Social shows as 'Active' under the plugin status.
    Affected if The plugin is active and running. An inactive plugin would not be exploitable via this reflected XSS vector.
  3. Identify potential reflected XSS entry points
    Review HTTP requests to the site for any parameters that might be reflected back in responses without sanitization. Common vectors in social media plugins include share preview pages, callback URLs, or settings pages that echo back query parameters. Check plugin files in /wp-content/plugins/blog2social/ for unsanitized use of $_GET, $_POST, or $_REQUEST variables.
    Affected if The plugin reflects unsanitized user input (URL parameters, form data) back into HTTP responses on any accessible page.
  4. Check for unauthenticated access to vulnerable endpoints
    Test accessing Blog2Social pages or AJAX endpoints without authentication. The vulnerability is described as unauthenticated, meaning no WordPress login should be required to trigger the reflected XSS. Attempt to access common plugin URLs (e.g., /wp-admin/admin-ajax.php?action=b2s_..., or frontend pages using the plugin) as an unauthenticated visitor.
    Affected if Unauthenticated (logged-out) users can trigger pages or parameters that reflect their input without sanitization.

Your environment is affected if Blog2Social version 7.2.0 or lower is installed and active, and the plugin reflects user-supplied input without proper sanitization in HTTP responses accessible to unauthenticated users.

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 7.2.0
Interim mitigation

Update to the latest patched version of Blog2Social. If no update is available, disable the plugin until a patch is released. As a temporary workaround, users should avoid clicking untrusted links to the affected site.

Recommended fix Moderate confidence

Update to the latest available version of Blog2Social (version > 7.2.0)

  1. Log in to the WordPress admin dashboard
  2. Navigate to Plugins > Installed Plugins
  3. Locate Blog2Social (Adenion Blog2Social: Social Media Auto Post & Scheduler)
  4. If an update is available, click 'Update Now' to install the latest version
  5. Alternatively, navigate to Dashboard > Updates and select Blog2Social to update
  6. After updating, verify the plugin is running on a version greater than 7.2.0

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

Fix this in Blog2social Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

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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-2023-40554 in production — separate from our analysis above.

No notes yet

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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