Wordpress : Security Vulnerabilities, CVEs, Published In 2017
WordPress through 4.8.2 uses a weak MD5-based password hashing algorithm, which makes it easier for attackers to determine cleartext values by leveraging access to the hash values. NOTE: the approach to changing this may not be fully compatible with certain use cases, such as migration of a WordPress site from a web host that uses a recent PHP version to a different web host that uses PHP 5.2. These use cases are plausible (but very unlikely) based on statistics showing widespread deployment of WordPress with obsolete PHP versions.
Max CVSS
7.5
EPSS Score
0.15%
Published
2017-10-19
Updated
2017-11-13
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.
Max CVSS
7.1
EPSS Score
32.65%
Published
2017-01-18
Updated
2017-09-03
CVE-2016-6897
Public exploit
Cross-site request forgery (CSRF) vulnerability in the wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress before 4.6 allows remote attackers to hijack the authentication of subscribers for /dev/random read operations by leveraging a late call to the check_ajax_referer function, a related issue to CVE-2016-6896.
Max CVSS
6.5
EPSS Score
0.33%
Published
2017-01-18
Updated
2017-09-03
Cross-site scripting (XSS) vulnerability in the media_handle_upload function in wp-admin/includes/media.php in WordPress before 4.6.1 might allow remote attackers to inject arbitrary web script or HTML by tricking an administrator into uploading an image file that has a crafted filename.
Max CVSS
4.8
EPSS Score
0.36%
Published
2017-01-05
Updated
2017-11-04
Directory traversal vulnerability in the File_Upload_Upgrader class in wp-admin/includes/class-file-upload-upgrader.php in the upgrade package uploader in WordPress before 4.6.1 allows remote authenticated users to access arbitrary files via a crafted urlholder parameter.
Max CVSS
6.5
EPSS Score
0.21%
Published
2017-01-05
Updated
2017-11-04
WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file.
Max CVSS
4.7
EPSS Score
0.08%
Published
2017-10-12
Updated
2017-10-26
The wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress before 4.6 makes a get_plugin_data call before checking the update_plugins capability, which allows remote authenticated users to bypass intended read-access restrictions via the plugin parameter to wp-admin/admin-ajax.php, a related issue to CVE-2016-6896.
Max CVSS
4.3
EPSS Score
0.09%
Published
2017-01-18
Updated
2017-03-16
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php in the REST API implementation in WordPress 4.7 before 4.7.1 does not properly restrict listings of post authors, which allows remote attackers to obtain sensitive information via a wp-json/wp/v2/users request.
Max CVSS
5.3
EPSS Score
87.41%
Published
2017-01-15
Updated
2017-09-01
Multiple cross-site scripting (XSS) vulnerabilities in wp-admin/update-core.php in WordPress before 4.7.1 allow remote attackers to inject arbitrary web script or HTML via the (1) name or (2) version header of a plugin.
Max CVSS
6.1
EPSS Score
0.48%
Published
2017-01-15
Updated
2017-11-04
Cross-site request forgery (CSRF) vulnerability in WordPress before 4.7.1 allows remote attackers to hijack the authentication of unspecified victims via vectors involving a Flash file upload.
Max CVSS
8.8
EPSS Score
0.27%
Published
2017-01-15
Updated
2017-11-04
Cross-site scripting (XSS) vulnerability in the theme-name fallback functionality in wp-includes/class-wp-theme.php in WordPress before 4.7.1 allows remote attackers to inject arbitrary web script or HTML via a crafted directory name of a theme, related to wp-admin/includes/class-theme-installer-skin.php.
Max CVSS
6.1
EPSS Score
0.47%
Published
2017-01-15
Updated
2017-11-04
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
Max CVSS
5.3
EPSS Score
0.66%
Published
2017-01-15
Updated
2019-10-03
Cross-site request forgery (CSRF) vulnerability in the widget-editing accessibility-mode feature in WordPress before 4.7.1 allows remote attackers to hijack the authentication of unspecified victims for requests that perform a widgets-access action, related to wp-admin/includes/class-wp-screen.php and wp-admin/widgets.php.
Max CVSS
8.8
EPSS Score
0.28%
Published
2017-01-15
Updated
2017-11-04
wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.
Max CVSS
7.5
EPSS Score
0.66%
Published
2017-01-15
Updated
2019-10-03
wp-admin/includes/class-wp-press-this.php in Press This in WordPress before 4.7.2 does not properly restrict visibility of a taxonomy-assignment user interface, which allows remote attackers to bypass intended access restrictions by reading terms.
Max CVSS
5.3
EPSS Score
0.53%
Published
2017-01-30
Updated
2019-03-19
SQL injection vulnerability in wp-includes/class-wp-query.php in WP_Query in WordPress before 4.7.2 allows remote attackers to execute arbitrary SQL commands by leveraging the presence of an affected plugin or theme that mishandles a crafted post type name.
Max CVSS
9.8
EPSS Score
0.32%
Published
2017-01-30
Updated
2021-01-30
Cross-site scripting (XSS) vulnerability in wp-admin/includes/class-wp-posts-list-table.php in the posts list table in WordPress before 4.7.2 allows remote attackers to inject arbitrary web script or HTML via a crafted excerpt.
Max CVSS
6.1
EPSS Score
0.23%
Published
2017-01-30
Updated
2019-03-19
In WordPress before 4.7.3, there is authenticated Cross-Site Scripting (XSS) via Media File Metadata. This is demonstrated by both (1) mishandling of the playlist shortcode in the wp_playlist_shortcode function in wp-includes/media.php and (2) mishandling of meta information in the renderTracks function in wp-includes/js/mediaelement/wp-playlist.js.
Max CVSS
5.4
EPSS Score
0.10%
Published
2017-03-12
Updated
2019-03-19
In WordPress before 4.7.3 (wp-includes/pluggable.php), control characters can trick redirect URL validation.
Max CVSS
6.1
EPSS Score
0.34%
Published
2017-03-12
Updated
2019-03-19
In WordPress before 4.7.3 (wp-admin/plugins.php), unintended files can be deleted by administrators using the plugin deletion functionality.
Max CVSS
5.5
EPSS Score
0.18%
Published
2017-03-12
Updated
2019-10-03
In WordPress before 4.7.3 (wp-includes/embed.php), there is authenticated Cross-Site Scripting (XSS) in YouTube URL Embeds.
Max CVSS
5.4
EPSS Score
0.09%
Published
2017-03-12
Updated
2019-03-19
In WordPress before 4.7.3 (wp-admin/js/tags-box.js), there is cross-site scripting (XSS) via taxonomy term names.
Max CVSS
6.1
EPSS Score
0.32%
Published
2017-03-12
Updated
2019-03-19
In WordPress before 4.7.3, there is cross-site request forgery (CSRF) in Press This (wp-admin/includes/class-wp-press-this.php), leading to excessive use of server resources. The CSRF can trigger an outbound HTTP request for a large file that is then parsed by Press This.
Max CVSS
6.5
EPSS Score
0.16%
Published
2017-03-12
Updated
2019-03-19
WordPress through 4.7.4 relies on the Host HTTP header for a password-reset e-mail message, which makes it easier for remote attackers to reset arbitrary passwords by making a crafted wp-login.php?action=lostpassword request and then arranging for this message to bounce or be resent, leading to transmission of the reset key to a mailbox on an attacker-controlled SMTP server. This is related to problematic use of the SERVER_NAME variable in wp-includes/pluggable.php in conjunction with the PHP mail function. Exploitation is not achievable in all cases because it requires at least one of the following: (1) the attacker can prevent the victim from receiving any e-mail messages for an extended period of time (such as 5 days), (2) the victim's e-mail system sends an autoresponse containing the original message, or (3) the victim manually composes a reply containing the original message.
Max CVSS
5.9
EPSS Score
2.83%
Published
2017-05-04
Updated
2017-11-04
In WordPress before 4.7.5, a cross-site scripting (XSS) vulnerability exists when attempting to upload very large files, because the error message does not properly restrict presentation of the filename.
Max CVSS
6.1
EPSS Score
0.29%
Published
2017-05-18
Updated
2019-03-15