Description
WordPress Plugin Smush Image Compression and Optimization is prone to a directory traversal vulnerability because it fails to sufficiently verify user-supplied input. Exploiting this issue can allow an attacker to obtain sensitive information that could aid in further attacks. WordPress Plugin Smush Image Compression and Optimization version 2.7.5 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.7.6 or latest
References
https://packetstormsecurity.com/files/144494/WordPress-Smush-Image-2.7.4.1-Directory-Traversal.html
https://wordpress.org/support/topic/file-transversal-bug/
https://plugins.svn.wordpress.org/wp-smushit/trunk/readme.txt
Related Vulnerabilities
PHP Cryptographic Issues Vulnerability (CVE-2010-1128)
WordPress Plugin TDO Mini Forms Arbitrary File Upload (0.13.9)
PrestaShop Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2020-15080)
Jenkins Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2020-2103)