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CVE-2016-6896

HighPublished

Directory traversal vulnerability in the wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress 4.5.3 allows remote authenticated...

Published: Jan 18, 2017
Updated: Aug 6, 2024
Assigning CNA: mitre
Evidence observed: Aug 22, 2016

Primary CVSS

7.1/ 10High

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

EPSS probability estimate

31.1%

Moderate · next 30 days

Percentile: 98.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Directory traversal vulnerability in the wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress 4.5.3 allows remote authenticated users to cause a denial of service or read certain text files via a .. (dot dot) in the plugin parameter to wp-admin/admin-ajax.php, as demonstrated by /dev/random read operations that deplete the entropy pool.

Sources

WordPress Core 4.5.3 - Directory Traversal / Denial of ServiceExploit
Yorick Koster · php · Aug 22, 2016

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