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CVE-2018-19296

25
FAUCET Score

CVE-2018-19296 describes an object injection vulnerability affecting PHPMailer versions before 5.2.27 and 6.x before 6.0.6, impacting products like Debian, Fedora, and WordPress. This high-severity vulnerability (CVSS 8.8) can be exploited remotely with low complexity, requiring user interaction, and potentially leading to high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the underlying CWEs (CWE-1321, CWE-502) indicate a serious risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.2.27CPE matchmatch criteria
cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.0.6CPE matchmatch criteria
cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.18%
Probability of exploitation in next 30 days
EPSS Percentile
80.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0218 is in the 79th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: phpmailer/phpmailerFixed in: 5.2.27
composerpatch availablevia ghsa
Product: phpmailer/phpmailerFixed in: 6.0.6
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-7w4p-72j7-v7c2high

Phar object injection in PHPMailer

Mar 5, 2020

References

github.com / PHPMailer/PHPMailer/releases/tag/v5.2.27
Release NotesVendor Advisory
github.com / PHPMailer/PHPMailer/releases/tag/v6.0.6
Release NotesVendor Advisory
lists.debian.org / debian-lts-announce/2018/12/msg00020.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/3B5WDPGUFNPG4NAZ6G4BZX43BKLAVA5B
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KPU66INRFY5BQ3ESVPRUXJR4DXQAFJVT
debian.org / security/2018/dsa-4351
Third Party Advisory