CVE-2016-10045

CRITICAL
9.8
CVSS Score
Published: December 30, 2016 at 07:00 PM UTC
Updated: June 17, 2026 at 12:38 AM UTC
3 products affected across 3 vendorsJoomla!WordPressPhpmailer

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Severity
CRITICAL9.8
Exploit prediction
EPSS 98%

Description

The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code by leveraging improper interaction between the escapeshellarg function and internal escaping performed in the mail function in PHP. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-10033.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.5.0 ≤ v ≤ 3.6.5
v < 5.2.20
Affected range stops below 5.2.20, so it looks safe — our inference, not a vendor statement
v ≤ 4.7

References (15)

Mailing Listx_refsource_FULLDISCPatchThird Party Advisory
http://seclists.org/fulldisclosure/2016/Dec/81
Mailing Listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/539967/100/0/threaded
VDB Entryx_refsource_BIDExploitThird Party Advisory
http://www.securityfocus.com/bid/95130
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1037533

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-77

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