ShortPixel Image Optimizer <= 6.4.2 - Authenticated (Editor+) Arbitrary File Read via 'loadFile' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
The ShortPixel Image Optimizer plugin for WordPress is vulnerable to Arbitrary File Read via path traversal in the 'loadFile' parameter in all versions up to, and including, 6.4.2 due to insufficient path validation and sanitization in the 'loadLogFile' AJAX action. This makes it possible for authenticated attackers, with Editor-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information such as database credentials and authentication keys.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ShortPixel | ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF | up to 6.4.2 | — | No fix listed | CNA |
- ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF VendorShortPixel Affected up to 6.4.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1246
- 2026-10-03 Alias added: GHSA-m3h6-h8v2-vr8w
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/03cb41d2-67c8-457f-8d85-7aede8e12d44?source=cve
- https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.1/class/Controller/AjaxController.php#L309
- https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.1/class/Controller/AjaxController.php#L1686
- https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.1/class/Controller/BulkController.php#L200
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3449706%40shortpixel-image-optimiser&new=3449706%40shortpixel-image-optimiser&sfp_email=&sfph_mail=
More ShortPixel vulnerabilities
- TI-2023-04280 Enable Media Replace < 4.1.3 - Author+ PHP Object Injection CVSS 3.1HIGH 8.8
- TI-2023-00241 Enable Media Replace < 4.0.2 - Author+ Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2023-00318 ShortPixel Adaptive Images < 3.6.3 - Reflected XSS CVSS 3.1MEDIUM 6.1
- TI-2026-14215 ShortPixel Image Optimizer <= 6.5.5 - Authenticated (Author+) PHP Object Injection via Nested JSON Post Content CVSS 3.1HIGH 8.8
- TI-2026-83296 PHP object injection in Enable Media Replace WordPress plugin CVSS 3.1HIGH 8.8
- TI-2023-15794 WordPress ShortPixel Adaptive Images Plugin <= 3.7.1 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
Sources
- CVE-2026-1246 · CVE Program
- CVE-2026-1246 · NVD
- FIRST EPSS
- GHSA-m3h6-h8v2-vr8w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences