CVE-2026-1557: WP Responsive Images <= 1.0 - Unauthenticated Path Traversal to Arbitrary File Read via src

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-26 · updated 2026-06-17
Weakness: CWE-22

Description

The WP Responsive Images plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.0 via the 'src' parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information.

Affected products

stuartbates WP Responsive Images: through 1.0

References

https://plugins.trac.wordpress.org/browser/wp-responsive-images/tags/1.0/SBOutputFile.php#L33
https://plugins.trac.wordpress.org/browser/wp-responsive-images/tags/1.0/WPResponsiveImages.php#L265
https://plugins.trac.wordpress.org/browser/wp-responsive-images/tags/1.0/image_handler.php#L28
https://plugins.trac.wordpress.org/browser/wp-responsive-images/trunk/SBOutputFile.php#L33
https://plugins.trac.wordpress.org/browser/wp-responsive-images/trunk/WPResponsiveImages.php#L265
https://plugins.trac.wordpress.org/browser/wp-responsive-images/trunk/image_handler.php#L28
https://www.wordfence.com/threat-intel/vulnerabilities/id/22c6f81b-d456-44b9-ba6c-8b207a9ee6e1?source=cve

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