Cross-site request forgery in Optimole – Optimize Images | Convert WebP & AVIF | CDN &…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2.6. This is due to missing or incorrect nonce validation on the replace_file function. This makes it possible for unauthenticated attackers to overwrite existing media attachments with attacker-supplied file content by supplying a forged multipart POST request targeting any attachment the victim has edit_post capability over via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. The forged request requires a victim with at least Author-level privileges, as the handler enforces a current_user_can('edit_post', $id) check; tricking an Author-level or higher user into clicking a crafted link is sufficient to trigger the overwrite against attachments that user can edit.
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 |
|---|---|---|---|---|---|
| optimole | Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization | up to 4.2.6 | — | No fix listed | CNA |
- Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization Vendoroptimole Affected up to 4.2.6 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11784
- 2026-10-03 Alias added: GHSA-xh6r-5wcf-38f6
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8a90de6e-6bd5-43b6-980d-84d25d4120ad?source=cve
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.6/inc/media_rename/attachment_edit.php#L331
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.6/inc/media_rename/attachment_edit.php#L24
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.5/inc/media_rename/attachment_edit.php#L331
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.5/inc/media_rename/attachment_edit.php#L24
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3574315%40optimole-wp&new=3574315%40optimole-wp&sfp_email=&sfph_mail=
More optimole vulnerabilities
- TI-2026-04558 Optimole <= 4.2.2 - Unauthenticated Stored Cross-Site Scripting via Srcset Descriptor Parameter CVSS 3.1HIGH 7.2
- TI-2026-01518 Super Page Cache <= 5.2.2 - Unauthenticated Stored Cross-Site Scripting via Activity Log CVSS 3.1HIGH 7.2
- TI-2026-86193 Stored cross-site scripting in Optimole WordPress plugin CVSS 3.1HIGH 7.2
- TI-2026-53980 Optimole <= 4.2.10 - Unauthenticated Stored Cross-Site Scripting via 'a' (above_fold_images) Parameter CVSS 3.1HIGH 7.2
- TI-2026-86192 Stored cross-site scripting in Optimole WordPress plugin via comments CVSS 3.1HIGH 7.2
- TI-2026-86170 Stored cross-site scripting in Optimole WordPress plugin CVSS 3.1HIGH 7.2
Sources
- CVE-2026-11784 · CVE Program
- CVE-2026-11784 · NVD
- FIRST EPSS
- GHSA-xh6r-5wcf-38f6 · 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