ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-1356

The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via th

Published Feb 12, 2026 · catalog updated Apr 8, 2026 · Converter for Media – Optimize images | Convert WebP & AVIF

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-1356. EPSS is 0.26%. Act only if a listed version of Converter for Media – 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.

Same product and reporting

Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Vendor / distro source
Affected products
vendor mateuszgbiorczyk Converter for Media – Optimize images | Convert WebP & AVIF 0 ≤6.5.1

The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via the PassthruLoader::load_image_source function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

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 mateuszgbiorczyk Converter for Media – Optimize images | Convert WebP & AVIF 0 ≤6.5.10 ≤6.5.1

How to fix CVE-2026-1356

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-2026-1356. EPSS is 0.26%. Act only if a listed version of Converter for Media – Optimize images | Convert WebP & AVIF is installed.

Which versions are affected?

Compare what you have installed with mateuszgbiorczyk Converter for Media – Optimize images | Convert WebP & AVIF 0 ≤6.5.1 0 ≤6.5.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.26%. 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. Feb 12, 2026 · EUVD

    Detected

    The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via the PassthruLoader::load_image_source function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify info

  2. Apr 8, 2026 · EUVD

    Updated

    The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via the PassthruLoader::load_image_source function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify info

Sources

  • CVE.orgVulnerability recordCVE-2026-1356

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-1356

    30-day exploitation probability 0.26%

    first.org
  • EUVDVulnerability recordEUVD-2026-7040

    The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via the PassthruLoader::load_image_source function. This makes it possible for unauthenticated attackers t

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • FIRST EPSSNov 3, 2026
  • EUVDNov 2, 2026