EasyncWordPress extension · Syntacticsinc
CVE-2023-38384
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 · uneditedUnauth. Reflected Cross-Site Scripting (XSS) vulnerability in Syntactics, Inc. EaSYNC plugin <= 1.3.7 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 confidenceUnauthenticated reflected cross-site scripting (XSS) vulnerability in Syntactics, Inc. EaSYNC plugin versions 1.3.7 and below. The vulnerability allows attackers to inject malicious JavaScript scripts through unsanitized user input that is reflected back in the application's response without proper output encoding.
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
EasyncWordPress extension
<= 1.3.7CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Confirm EaSYNC plugin installationLocate the Syntacticsinc EaSYNC plugin files in the web application's plugin or extension directory. Common paths include /wp-content/plugins/easync/, /plugins/easync/, or check the plugin management interface if this is a CMS-based system.Affected if The EaSYNC plugin is found installed on the system
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Identify installed plugin versionCheck the plugin's main PHP file, readme.txt, or plugin metadata for the version number. Look for a version declaration such as 'Version: 1.3.7' or similar.Affected if The installed version is 1.3.7 or any version lower than 1.3.7
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Verify unauthenticated access to plugin endpointsAccess the EaSYNC plugin URLs directly without logging in. Try common endpoint patterns such as /easync/, /?easync=1, or the main plugin page to confirm the plugin is accessible to unauthenticated users.Affected if The plugin pages or endpoints are accessible without authentication
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Test for reflected input in responsesSubmit a harmless test string such as '<script>alert(1)</script>' or a unique marker like 'TESTXSS123' in common query parameters (search, id, ref, or any user input field) and examine if the exact string appears unencoded in the HTML response.Affected if User-supplied input is reflected back in the response without HTML encoding (the raw test string appears in the page source)
A user is affected if the EaSYNC plugin version is 1.3.7 or lower AND the plugin is accessible without authentication AND user input is reflected in responses without proper encoding.
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 dataUpgrade the EaSYNC plugin to a version newer than 1.3.7 that contains the security fix. Until patched, implement web application firewall (WAF) rules to filter XSS payloads in request parameters.
Fix this in Easync
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-38384 — 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-2023-38384 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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- 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