CVE intelligence and bounded remediation

CVE-2015-4455 — Aviary Image Editor Add-On For Gravity Forms Project Aviary Image Edito… security vulnerability

Critical CVSS 9.8

Unrestricted file upload vulnerability in includes/upload.php in the Aviary Image Editor Add-on For Gravity Forms plugin 3.0 beta for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in wp-content/uploads/gform_aviary.

Severity
Critical
CVSS
9.8 (3.0)
Published
2017-05-23
CISA KEV
Not currently listed
Ecosystem
php/wordpress
Weaknesses
CWE-434

Affected products

  • aviary_image_editor_add-on_for_gravity_forms_project / aviary_image_editor_add-on_for_gravity_forms

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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