CVE-2018-19296

Name: CVE-2018-19296
Creator: NVD / NIST
Published: 2018-11-16T09:29:00.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.21%

Last modified Jun 17, 2026

CVE-2018-19296 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.. EPSS estimates a 2.21% chance of exploitation in the next 30 days.

Description

PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

2.21%

80.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Phpmailer Project	Phpmailer	< 5.2.27
Phpmailer Project	Phpmailer	>= 6.0.0, < 6.0.6
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Wordpress	Wordpress	>= 3.7, <= 5.7

References

https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.27Release Notes, Vendor Advisory
https://github.com/PHPMailer/PHPMailer/releases/tag/v6.0.6Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00020.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3B5WDPGUFNPG4NAZ6G4BZX43BKLAVA5B/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPU66INRFY5BQ3ESVPRUXJR4DXQAFJVT/
https://www.debian.org/security/2018/dsa-4351Third Party Advisory
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.27Release Notes, Vendor Advisory
https://github.com/PHPMailer/PHPMailer/releases/tag/v6.0.6Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00020.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3B5WDPGUFNPG4NAZ6G4BZX43BKLAVA5B/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPU66INRFY5BQ3ESVPRUXJR4DXQAFJVT/
https://www.debian.org/security/2018/dsa-4351Third Party Advisory

Timeline

Published: Nov 16, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-19296?

PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.

How severe is CVE-2018-19296?

CVE-2018-19296 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.21% probability of exploitation in the next 30 days.

How do I fix CVE-2018-19296?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19296?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST