dbcve.org
Path TraversalWeakness · CWE-22

CVE-2026-42757

CRITICAL · 9.9 CVSS v3.1 Published 2026-05-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable Zero-click

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
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Saleswonder Team: Tobias WebinarIgnition webinar-ignition allows Path Traversal.This issue affects WebinarIgnition: from n/a through < 4.08.253.

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

A path traversal vulnerability in WebinarIgnition allows attackers to use '../' sequences in file path parameters to access files outside the restricted web root directory. This improper limitation of pathname to a restricted directory enables unauthorized file system access.

MitigationUpgrade WebinarIgnition to version 4.08.253 or later to obtain the patched version that properly validates and sanitizes file path inputs.

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
High
Integrity
High
Availability
High

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

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

  1. Identify WebinarIgnition installation and version
    Check the plugin/theme version file in your WordPress installation (wp-content/plugins/webinarignition or wp-content/themes/webinarignition). Look for a version.php file or check the plugin header in the main PHP file.
    Affected if The installed version is below 4.08.253 (prior to the patched release).
  2. Locate the file upload/download functionality
    Search the WebinarIgnition codebase for code that handles file path parameters, particularly functions that accept user input for file operations. Look for parameters that might accept file paths like 'file', 'filepath', 'download', or similar.
    Affected if The vulnerable file path parameter feature exists and accepts user-supplied input without proper sanitization.
  3. Inspect input validation in path-handling code
    Review the code handling file path parameters. Check if '../' sequences or other path traversal patterns are being filtered, validated, or removed before use in file operations.
    Affected if The code does not properly validate or sanitize path inputs, allowing '../' sequences to pass through unchecked.
  4. Review web server access logs for path traversal attempts
    Examine access logs (Apache/Nginx) for requests to WebinarIgnition endpoints containing '../' patterns in parameters. Search for sequences like '..%2F', '..%252F', or literal '../' in query strings or POST data.
    Affected if Log analysis reveals path traversal attempts targeting WebinarIgnition endpoints, indicating active scanning or exploitation.

You are affected if your WebinarIgnition installation is version 4.08.252 or earlier AND the vulnerable file path parameter functionality is exposed and accepts unsanitized input.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade WebinarIgnition to version 4.08.253 or later to obtain the patched version that properly validates and sanitizes file path inputs.

Recommended fix Moderate confidence

Version 4.08.253 or later

  1. 1. Backup your current WebinarIgnition installation and database before making any changes.
  2. 2. Navigate to the WebinarIgnition plugin/settings in your WordPress admin panel or check the vendor's official distribution channel.
  3. 3. Update WebinarIgnition to version 4.08.253 or later.
  4. 4. Verify the update was successful by checking the plugin version number.
  5. 5. Test that webinar functionality works correctly after the update.
  6. 6. Monitor for any errors or unusual behavior following the upgrade.
Caveat Review plugin changelog for any feature changes between your current version and 4.08.253; minor/feature changes are possible but no major breaking changes typically expected for security patches

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

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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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-2026-42757 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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