Plugins · image-optimization · data as of 2026-11-01
Is Image Optimizer safe? Known vulnerabilities and latest version
- Latest version
- 1.7.7
- Last updated
- 2026-09-22
- Active installs
- 1+ million
- Known issues on record
- 3
- Unpatched in latest
- 0
- Tested up to WP
- 7.0.8 · PHP 7.4+
Image Optimizer is an easy-to-use WordPress plugin that reduces image size through various compression and resizing techniques – all of which preserve … — by Elementor
What to do
- Update to the latest version (1.7.7). Anything older than 1.7.7 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
- If you cannot update right away, deactivate it until you can.
- Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.
With WP-CLI: wp plugin get image-optimization --field=version shows what you run; wp plugin update image-optimization updates it.
Check your version
Known vulnerabilities
3 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.
medium 4.3 CVE-2026-90953 · published 2026-09-30
Information disclosure in Image Optimizer (older than 1.7.7)
- Affected
- older than 1.7.7
- Fixed in
- 1.7.7
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by CISA ADP
Details from the advisory
The Image Optimizer WordPress plugin before 1.7.7 does not enforce its intended capability check on several of its read REST routes, allowing any authenticated user to read attachment metadata and site-wide statistics that should be restricted to administrators.
high 8.1 CVE-2026-5821 · published 2026-07-02
Arbitrary file deletion in Image Optimizer (1.7.4 and older)
- Affected
- 1.7.4 and older
- Fixed in
- 1.7.5 *
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
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.
NVD CVE-2026-5821Wordfence advisoryCode change (fix)research.cleantalk.orgPlugin source
medium 4.3 CVE-2026-25387 · published 2026-02-19
Missing authorization check in Image Optimizer (1.7.1 and older)
- Affected
- 1.7.1 and older
- Fixed in
- 1.7.2
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Missing Authorization vulnerability in Elementor Image Optimizer by Elementor image-optimization allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Image Optimizer by Elementor: from n/a through <= 1.7.1.
Recent activity
- 2026-09-22 — latest release on wordpress.org (1.7.7).
- 2026-09-30 — Information disclosure disclosed (CVE-2026-90953), fixed in 1.7.7.
- 2026-07-02 — Arbitrary file deletion disclosed (CVE-2026-5821), fixed in 1.7.5.
- 2026-02-19 — Missing authorization check disclosed (CVE-2026-25387), fixed in 1.7.2.
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Where this data comes from
- Version, last update, installs: wordpress.org/plugins/image-optimization (Plugins API), fetched 2026-11-01.
- Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-01. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.
Badge for your site or docs (states facts with a date, not a verdict):
<a href="https://laskyr.com/plugins/image-optimization"><img src="https://laskyr.com/plugins/image-optimization/badge.svg" alt="Image Optimizer vulnerability status"></a>