Cross-site scripting in ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the API URL Setting in all versions up to, and including, 3.10.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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 Adaptive Images – WebP, AVIF, CDN, Image Optimization | up to 3.10.4 | — | No fix listed | CNA |
- ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization VendorShortPixel Affected up to 3.10.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6626
- 2026-10-03 Alias added: GHSA-v6g9-v26j-6w22
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/56ab6429-4b1b-461a-9fcd-b4be84985118?source=cve
- https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.10.4/includes/front/vanilla-js-loader.class.php#L48
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3337681%40shortpixel-adaptive-images&new=3337681%40shortpixel-adaptive-images&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-2025-6626 · CVE Program
- CVE-2025-6626 · NVD
- FIRST EPSS
- GHSA-v6g9-v26j-6w22 · 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