EUVD-2026-41247
GHSA-rhv9-h5xx-r8m5
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Exploited over the network via the WP dashboard (AV:N/AC:L), but requires Author-level auth (PR:L); file deletion yields high integrity and availability impact with no confidentiality loss.
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
The Image Optimizer plugin for WordPress is vulnerable to arbitrary file deletion in versions up to and including 1.7.4. This is due to insufficient path validation in the Image_Backup::remove() function where backup file paths stored in post meta are used directly in file deletion operations without verifying they are within the uploads directory. The plugin stores backup file paths in the image_optimizer_metadata post meta field and trusts these paths completely when deleting backups on the delete_attachment hook. An authenticated attacker with Author-level access can edit the image_optimizer_metadata post meta on their own attachments via WordPress's Custom Fields interface, injecting arbitrary absolute file paths into the backups array. When the attacker subsequently deletes the attachment, the plugin calls File_System::delete() on each path without validation. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files on the server within the web server's filesystem permissions, potentially leading to denial of service, data loss, or security degradation.
AnalysisAI
Arbitrary file deletion in the Image Optimizer plugin for WordPress (versions up to and including 1.7.4) lets an authenticated attacker with Author-level access or higher delete any file the web server can write to, potentially causing denial of service, data loss, or removal of security-relevant files such as wp-config.php. The flaw stems from the plugin trusting attacker-controllable backup paths stored in post meta. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated account with Author-level capabilities or above (PR:L) on the target WordPress site, and requires that the Image Optimizer plugin (<=1.7.4) is installed and active. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are moderately concerning but not emergency-tier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who registers or compromises an Author account uploads an image, then uses the WordPress Custom Fields editor to overwrite the image_optimizer_metadata backups array with an absolute path such as /var/www/html/wp-config.php. When they delete that attachment, the plugin's delete_attachment handler calls File_System::delete() on the injected path, removing the file and breaking or degrading the site. … |
| Remediation | Upstream fix available (changeset 3557772 on the image-optimization repository); a released patched version was not explicitly stated in the input but corresponds to the release following 1.7.4, so administrators should update the Image Optimizer plugin to the latest available version (later than 1.7.4) once confirmed against the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/a1a00374-e9d6-46f9-a28c-cb7768505787 and the plugin changeset at https://plugins.trac.wordpress.org/changeset?reponame=&old=3557772%40image-optimization&new=3557772%40image-optimization. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all WordPress installations running Image Optimizer plugin ≤1.7.4; restrict Author-level permissions to only essential staff and disable unused accounts. …
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External POC / Exploit Code
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