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CVE Record

CVE-2018-19296: PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.

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

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE affects older PHPMailer versions, a common PHP email library. The published record says vulnerable versions may allow object injection. The sources name fixed PHPMailer releases but do not provide CVSS scoring, exploitation evidence, or detailed impact.

Executive priority

Prioritize as dependency remediation, not confirmed emergency response. Escalate if older PHPMailer is present in internet-facing PHP applications or customer communication workflows.

Technical view

PHPMailer before 5.2.27 and 6.x before 6.0.6 is described as vulnerable to object injection. Debian and Fedora advisories reference distribution updates. The source bundle does not describe exploit prerequisites, affected code paths, or whether remote unauthenticated exploitation is possible.

Likely exposure

Exposure is most likely in PHP applications, plugins, CMS deployments, or containers bundling PHPMailer below 5.2.27 or 6.0.6. Distribution-packaged installs may be covered by Debian or Fedora security updates.

Exploitation context

The provided sources do not cite active exploitation, and the CVE is not marked KEV. Treat exploitation status as unconfirmed. Object injection can be serious, but the bundle lacks enough detail to rate exploitability.

Researcher notes

Evidence is limited to affected version statements and release/advisory references. Do not assume exploit chain, authentication requirements, or impact beyond object injection without vendor or code-level confirmation.

Mitigation direction

  • Upgrade PHPMailer to 5.2.27, 6.0.6, or a later supported release.
  • Apply Debian or Fedora security packages where PHPMailer is distribution-managed.
  • Check vendor guidance for application-specific remediation and compatibility notes.
  • Remove bundled legacy PHPMailer copies from applications and plugins.

Validation and detection

  • Inventory PHPMailer versions in composer.lock, vendor directories, containers, and system packages.
  • Confirm production uses PHPMailer 5.2.27+, 6.0.6+, or a patched distro build.
  • Search application dependencies for bundled PHPMailer copies outside package managers.
  • Review Debian and Fedora advisory applicability for managed hosts.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2018-19296 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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