dbcve.org
Twitter Cards MetaWordPress extension · Wpdeveloper

CVE-2017-18503

MEDIUM · 6.1 CVSS v3.0 Published 2019-08-12
Fix available
A fix is available. Upgrade to 2.5.0 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
The twitter-cards-meta plugin before 2.5.0 for WordPress has XSS.

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 · high confidence

Cross-Site Scripting (XSS) vulnerability in the twitter-cards-meta WordPress plugin affecting versions prior to 2.5.0. The vulnerability allows attackers to inject malicious scripts into web pages viewed by users of the affected plugin.

MitigationUpdate twitter-cards-meta plugin to version 2.5.0 or later to patch the XSS vulnerability. As this is a medium-severity XSS (CVSS 6.1), timely patching is recommended to prevent potential session hijacking or credential theft.

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
Twitter Cards MetaWordPress extension
Affected:< 2.5.0

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:3.0/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. Locate the twitter-cards-meta plugin installation directory
    Check your WordPress plugins directory at wp-content/plugins/ for a folder named twitter-cards-meta or similar (may also be named twitter-cards-meta-master or twitter-cards). Use FTP, SSH, or file manager to list directories.
    Affected if The plugin directory exists on the server
  2. Identify the installed plugin version
    If the plugin is installed, open its main PHP file (usually twitter-cards-meta.php) and look for the version comment in the plugin header, typically in the format "Version: x.x.x" or check the readme.txt file for the "Stable tag" entry.
    Affected if The version number found is less than 2.5.0 (e.g., 2.4, 2.3, 1.0)
  3. Verify the plugin is active
    Log into WordPress admin panel, navigate to Plugins > Installed Plugins, and check if twitter-cards-meta is listed as active.
    Affected if The plugin shows as active in the WordPress admin

You are affected if the twitter-cards-meta plugin is installed, active, and running a version lower than 2.5.0, as only these versions contain the XSS vulnerability.

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.

From vendor data
Upgrade available Upgrade to 2.5.0 or later
Fixed in 2.5.0
Interim mitigation

Update twitter-cards-meta plugin to version 2.5.0 or later to patch the XSS vulnerability. As this is a medium-severity XSS (CVSS 6.1), timely patching is recommended to prevent potential session hijacking or credential theft.

Fix this in Twitter Cards Meta Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

Scan for this in your stack

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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-2017-18503 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