Pdf PosterWordPress extension · Bplugins
CVE-2024-23508
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 · uneditedImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in bPlugins PDF Poster – PDF Embedder Plugin for WordPress allows Reflected XSS.This issue affects PDF Poster – PDF Embedder Plugin for WordPress: from n/a through 2.1.17.
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 confidenceA reflected cross-site scripting (XSS) vulnerability exists in the bPlugins PDF Poster WordPress plugin (versions up to 2.1.17). The vulnerability allows an attacker to inject malicious JavaScript code through unsanitized input that gets reflected back in the web page without proper encoding, potentially leading to session hijacking or phishing attacks.
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
Pdf PosterWordPress extension
< 2.1.18CVSS 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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Locate the PDF Poster plugin versionAccess your WordPress site's plugin directory or admin panel. Navigate to Plugins > Installed Plugins and find 'PDF Poster' by bPlugins. Note the version number displayed.Affected if The version shown is lower than 2.1.18 (for example, 2.1.17, 2.1.16, etc.)
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Verify the installed version programmaticallyIf you have filesystem access, check the main plugin file (typically wp-content/plugins/pdf-poster/main.php or similar) for the 'Version' header in the plugin comment block. You can also query the WordPress database via: SELECT option_value FROM wp_options WHERE option_name = 'pdf_poster_version' or check the active_plugins array.Affected if The retrieved version number is less than 2.1.18
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Identify exposed endpoints that reflect user inputReview your web server access logs or use a sitemap scanner to identify URLs under /pdf-poster/ or similar paths that accept user-supplied parameters (GET or POST requests). Common XSS vectors in such plugins include parameters like 'id', 'file', 'url', or 'src'.Affected if The plugin exposes any HTTP endpoints that accept input parameters without authentication
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Test for reflected input without encodingSend a benign test payload such as '<script>alert(1)</script>' or 'TESTXSS' as a parameter value to any identified PDF Poster endpoint. Capture the HTTP response and examine if the payload appears unencoded in the HTML output (visible in page source).Affected if The reflected payload appears literally in the response HTML without being escaped (e.g., appears as <script>alert(1)</script> instead of <script>)
Your environment is affected if the PDF Poster plugin version is below 2.1.18 AND the plugin exposes HTTP endpoints that reflect user input without proper HTML 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.
dbcve · scoped2.1.18
Update the PDF Poster plugin to the latest version which should contain proper input sanitization and output encoding. If an update is unavailable, review and sanitize all user-supplied input before reflecting it in HTML output.
PDF Poster plugin version 2.1.18
- Log in to the WordPress admin dashboard
- Navigate to Plugins > Installed Plugins
- Locate the PDF Poster – PDF Embedder plugin in the list
- If an update is available, click 'Update Now' to upgrade to version 2.1.18
- Alternatively, go to Dashboard > Updates and select the PDF Poster plugin for update
- After updating, verify the plugin version shows 2.1.18 to confirm the patch was applied
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Pdf Poster
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 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 $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-23508 — 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-2024-23508 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