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Description

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.

PUBLISHED Reserved 2025-05-05 | Published 2025-05-05 | Updated 2026-04-08 | Assigner Wordfence




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-434 Unrestricted Upload of File with Dangerous Type

Product status

Default status
unaffected

Any version
affected

Timeline

2025-05-05:Discovered
2025-05-05:Disclosed

Credits

István Márton finder

References

www.wordfence.com/...-d98b-4953-99dc-a952dda48aa1?source=cve

plugins.trac.wordpress.org/...e-replace/tags/1.0.8/class.php

cve.org (CVE-2025-4279)

nvd.nist.gov (CVE-2025-4279)

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