WordPress up to version 5.5 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.
CVE-2017-8295 is a medium severity with CVSS 5.9 Vulnerability issue affecting the Core WordPress. It affects Versions before 5.5 and is fixed in 5.5.
CVE-2017-8295 is tracked for the Core WordPress as medium severity with CVSS 5.9. The affected range is Versions before 5.5. Update WordPress to 5.5 or newer where that version is compatible with the site.
| Software Type | Core |
|---|---|
| Software Slug |
wordpress
|
| CVE | CVE-2017-8295 |
| Patched Versions |
5.5
|
| Affected Versions |
Versions before 5.5
|
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