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Vulnerability record · CVE-2015-8476 · published 16 December 2015

CVE-2015-8476: Debian linux improper input validation vulnerability

Debian · Debian Linux

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

5.0 CVSS 2.0 Medium EPSS 2.0% · top 20.1% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177130.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177139.html
http://www.debian.org/security/2015/dsa-3416
http://www.openwall.com/lists/oss-security/2015/12/04/5
http://www.openwall.com/lists/oss-security/2015/12/05/1
http://www.securityfocus.com/bid/78619
https://github.com/PHPMailer/PHPMailer/commit/6687a96a18b8f12148881e4ddde795ae477284b0
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.14 Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177130.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177139.html
http://www.debian.org/security/2015/dsa-3416
http://www.openwall.com/lists/oss-security/2015/12/04/5
http://www.openwall.com/lists/oss-security/2015/12/05/1
http://www.securityfocus.com/bid/78619
https://github.com/PHPMailer/PHPMailer/commit/6687a96a18b8f12148881e4ddde795ae477284b0
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.14 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-8476), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.