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Vulnerabilities

Vulnerability · CVE-2025-4279

The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post'

Published May 5, 2025 · catalog updated Apr 8, 2026 · muromuro External image replace

Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.8%
Remediation
Vendor / distro source
Affected products
vendor muromuro External image replace 0 ≤1.0.8

The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post' function in all versions up to, and including, 1.0.8. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    No CWE identifiers stored yet.

  • Prerequisites and impact

    Follow the original vendor advisory for access prerequisites and impact. This catalog does not invent exploit conditions.

How to fix CVE-2025-4279

What to do

Three reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2025-4279 is a high issue in muromuro External image replace (CVSS 8.8). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether muromuro External image replace is installed. Ranges on record: muromuro External image replace 0 ≤1.0.8 (0 ≤1.0.8). Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 8.8. EPSS 0.8%. CISA does not currently list it as known exploited. Weaknesses: not classified. Sources: cve_org, epss, euvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

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. May 5, 2025 · EUVD

    Detected

    The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post' function in all versions up to, and including, 1.0.8. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may ma

  2. Apr 8, 2026 · EUVD

    Updated

    The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post' function in all versions up to, and including, 1.0.8. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may ma

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • vendor muromuro External image replace 0 ≤1.0.80 ≤1.0.8

Sources

  • CVE.orgVulnerability recordCVE-2025-4279

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4279

    30-day exploitation probability 0.8%

    first.org
  • EUVDVulnerability recordEUVD-2025-13432

    The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post' function in all versions up to, and including, 1.0.8. This makes it possible for authenticated attac

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.