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Vulnerabilities

Vulnerability · CVE-2025-11378

The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on t

Published Oct 18, 2025 · catalog updated Apr 8, 2026 · ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF

Last checked Oct 24, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-11378. EPSS is 0.31%. Act only if a listed version of ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.31%
Remediation
Vendor / distro source
Affected products
vendor shortpixel ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 0 ≤6.3.4

The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to export and import site options.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor shortpixel ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 0 ≤6.3.40 ≤6.3.4

How to fix CVE-2025-11378

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-11378. EPSS is 0.31%. Act only if a listed version of ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF is installed.

Which versions are affected?

Compare what you have installed with shortpixel ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 0 ≤6.3.4 0 ≤6.3.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 18, 2025 · EUVD

    Detected

    The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to export and import site options.

  2. Apr 8, 2026 · EUVD

    Updated

    The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to export and import site options.

Sources

  • CVE.orgVulnerability recordCVE-2025-11378

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-11378

    30-day exploitation probability 0.31%

    first.org
  • EUVDVulnerability recordEUVD-2025-34954

    The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it p

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 24, 2026
  • FIRST EPSSOct 24, 2026
  • EUVDOct 24, 2026