Cross-site scripting in PHPMailer - #VU80107
Published: August 29, 2023
Vulnerability identifier: #VU80107
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data when processing DSNs. A remote attacker can execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
PHPMailer
Fedora
php-phpmailer6
Fedora
php-phpmailer6
Remediation
Install updates from vendor's website.
PHPMailer - update to 6.8.1
php-phpmailer6 - addressed in versions 6.8.1-1.fc37, 6.8.1-1.fc38, 6.8.1-1.fc39
php-phpmailer6 - addressed in versions 6.8.1-1.fc37, 6.8.1-1.fc38, 6.8.1-1.fc39