WP Popular Posts <= 7.4.3 - Authenticated (Author+) Blind Server-Side Request Forgery via Post Image URLs
- ID
- WPSEC-2026-2432
- Plugin
- WP Popular Posts (wordpress-popular-posts)
- Affected
- all versions before 7.4.4
- Remediation
- Update to 7.4.4 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-918
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-11-04
- Attack surface
- WP Popular Posts on WPSec AttackSurface
- Fix released
- Published
Description
The WP Popular Posts plugin for WordPress is vulnerable to blind Server-Side Request Forgery via external thumbnail images in all versions up to, and including, 7.4.3. This is due to the fetch_external_image() function sending a wp_remote_head() request to the image URL without the reject_unsafe_urls option and with SSL verification turned off. When the thumbnail source is set to 'First image on post' or 'Custom field', the URL comes from the post content or a custom field. This makes it possible for authenticated attackers, with author-level access and above, to publish a post with a crafted image URL, which makes the web server send HEAD requests to arbitrary locations, including internal and loopback hosts, whenever the post shows in a popular posts list.
References
- https://wpsec.com/vuln/WPSEC-2026-2432/
- https://plugins.svn.wordpress.org/wordpress-popular-posts/tags/7.4.4/
- https://wordpress.org/plugins/wordpress-popular-posts/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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