CVE-2020-36326 in Phpmailerproject and WordPress Products
Published on April 28, 2021
PHPMailer 6.1.8 through 6.4.0 allows object injection through Phar Deserialization via addAttachment with a UNC pathname. NOTE: this is similar to CVE-2018-19296, but arose because 6.1.8 fixed a functionality problem in which UNC pathnames were always considered unreadable by PHPMailer, even in safe contexts. As an unintended side effect, this fix eliminated the code that blocked addAttachment exploitation.
Products Associated with CVE-2020-36326
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Vulnerable Packages
The following package name and versions may be associated with CVE-2020-36326
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| composer | PHPMailer/PHPMailer | >= 6.1.8, < 6.4.1 | 6.4.1 |
Exploit Probability
EPSS
0.76%
Percentile
73.03%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.