CVE-2020-36326

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

PHPMailer versión 6.1.8 hasta la versión 6.4.0 permite la inyección de objetos a través de Phar Deserialization vía addAttachment con un nombre de ruta UNC. NOTA: esto es similar a CVE-2018-19296, pero surgió porque la versión 6.1.8 corrigió un problema de funcionalidad en el que los nombres de ruta UNC siempre se consideraban ilegibles por PHPMailer, incluso en contextos seguros. Como efecto secundario no intencionado, esta corrección eliminó el código que bloqueaba la explotación de addAttachment

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-28 CVE Reserved
2021-04-28 CVE Published
2024-08-04 CVE Updated
2025-02-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/PHPMailer/PHPMailer/commit/e2e07a355ee8ff36aba21d0242c5950c56e4c6f9	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3B5WDPGUFNPG4NAZ6G4BZX43BKLAVA5B	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPU66INRFY5BQ3ESVPRUXJR4DXQAFJVT	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Phpmailer Project Search vendor "Phpmailer Project"		Phpmailer Search vendor "Phpmailer Project" for product "Phpmailer"				>= 6.1.8 <= 6.4.0 Search vendor "Phpmailer Project" for product "Phpmailer" and version " >= 6.1.8 <= 6.4.0"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 3.7 < 3.7.36 Search vendor "Wordpress" for product "Wordpress" and version " >= 3.7 < 3.7.36"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 3.8 < 3.8.36 Search vendor "Wordpress" for product "Wordpress" and version " >= 3.8 < 3.8.36"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 3.9 < 3.9.34 Search vendor "Wordpress" for product "Wordpress" and version " >= 3.9 < 3.9.34"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.0 < 4.0.33 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.0 < 4.0.33"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.1 < 4.1.33 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.1 < 4.1.33"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.2 < 4.2.30 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.2 < 4.2.30"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.3 < 4.3.26 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.3 < 4.3.26"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.4 < 4.4.25 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.4 < 4.4.25"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.5 < 4.5.24 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.5 < 4.5.24"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.6 < 4.6.21 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.6 < 4.6.21"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.7 < 4.7.21 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.7 < 4.7.21"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.8 < 4.8.17 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.8 < 4.8.17"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 4.9 < 4.9.18 Search vendor "Wordpress" for product "Wordpress" and version " >= 4.9 < 4.9.18"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.0 < 5.0.13 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.0 < 5.0.13"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.1 < 5.1.10 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.1 < 5.1.10"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.2 < 5.2.11 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.2 < 5.2.11"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.3 < 5.3.8 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.3 < 5.3.8"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.4 < 5.4.6 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.4 < 5.4.6"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.5 < 5.5.5 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.5 < 5.5.5"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.6 < 5.6.4 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.6 < 5.6.4"		-		Affected
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 5.7 < 5.7.2 Search vendor "Wordpress" for product "Wordpress" and version " >= 5.7 < 5.7.2"		-		Affected