Deserialization in Phpmailer_project Phpmailer
CVE-2020-36326
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…
Vulnerability class: Insecure Deserialization
EPSS: 0.031 (86.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Phpmailer_project Phpmailer
- Wordpress
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2020-36326?
- CVE-2020-36326 is a critical-severity vulnerability in Phpmailer_project Phpmailer, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-04-28.
- How severe is CVE-2020-36326?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-36326 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.