CVE-2024-37423
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 Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Automattic Newspack Blocks allows Path Traversal.This issue affects Newspack Blocks: from n/a through 3.0.8.
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 confidenceA path traversal vulnerability in Automattic Newspack Blocks allows attackers to access files outside restricted directories by manipulating file path inputs. The vulnerability affects versions through 3.0.8.
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
- Changed
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/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 installed Newspack Blocks versionIn WordPress admin, go to Plugins > Installed Plugins > Newspack Blocks and read the Version field. Alternatively, check the plugin header in /wp-content/plugins/newspack-blocks/newspack-blocks.php for 'Version: x.x.x'Affected if The installed version is 3.0.8 or earlier (any version through 3.0.8)
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Locate the plugin file handling codeExamine the plugin directory /wp-content/plugins/newspack-blocks/ for PHP files that handle file paths or image serving, particularly any files that accept file path parametersAffected if The plugin processes file path inputs without proper sanitization, allowing directory traversal sequences like '../'
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Inspect file path validation logicSearch the plugin code for path validation functions - look for code that handles file path parameters (often in $_GET or $_POST requests) and check if they validate against allowed directories using realpath(), is_dir(), or similar checksAffected if No validation exists, or the validation can be bypassed by using encoded path sequences
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Verify server file access exposureTest whether the plugin allows accessing files outside the wp-content/uploads/ or designated media directories by attempting to reference system files through the plugin's file-serving endpointsAffected if Files outside the intended directory are accessible through the plugin's file handling mechanism
You are affected if Newspack Blocks version 3.0.8 or earlier is installed and the plugin processes file path inputs without proper directory confinement validation.
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 dataUpdate Newspack Blocks to the latest patched version and implement proper path validation to ensure all file paths are constrained to allowed directories.
- 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-2024-37423 — 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-2024-37423 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