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CVE-2018-19047: mPDF through 7.1.6, if deployed as a web application that accepts arbitrary HTML, allows SSRF, as demonstra...

mPDF through 7.1.6, if deployed as a web application that accepts arbitrary HTML, allows SSRF, as demonstrated by a '<img src="http://192.168' substring that triggers a call to getImage in Image/ImageProcessor.php. NOTE: the software maintainer disputes this, stating "If you allow users to pass HTML without sanitising it, you're asking for trouble.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

mPDF can be exposed to SSRF risk when an application lets users submit arbitrary HTML for PDF generation. User-controlled image references may cause the server to fetch internal or external URLs. The maintainer disputed this as unsafe integration behavior, so urgency depends on how mPDF is embedded and whether untrusted HTML is sanitized.

Executive priority

Prioritize review if PDF generation is internet-facing or accepts customer-supplied HTML. Business urgency is lower for trusted-template-only use, but SSRF can expose internal services if controls are weak.

Technical view

CVE-2018-19047 describes mPDF through 7.1.6 calling image-processing logic for user-controlled HTML image references, potentially causing server-side URL fetches. The record provides no CVSS, CWE, CPE, fixed version, or named patch. The issue is conditional on deployments that accept arbitrary unsanitized HTML.

Likely exposure

Exposure is likely limited to applications using mPDF as a web-facing PDF generator for untrusted HTML. Internal-only batch generation from trusted templates is lower concern. The CVE source bundle does not identify specific platforms, packages, or CPEs beyond mPDF through 7.1.6.

Exploitation context

The source bundle cites a demonstration concept and notes maintainer dispute, but does not show active exploitation. CISA KEV status is false. Treat this as an integration-dependent SSRF risk rather than confirmed broad product compromise.

Researcher notes

Evidence is sparse and disputed by the maintainer as unsafe caller behavior. The CVE lacks CVSS, CWE, CPEs, exploit status, and a stated fixed version. Validate deployment context before assigning severity.

Mitigation direction

  • Check current mPDF/vendor guidance for supported fixes or configuration recommendations.
  • Do not pass arbitrary unsanitized user HTML into mPDF.
  • Allowlist permitted image and resource sources before PDF rendering.
  • Restrict PDF-rendering hosts from reaching internal metadata and admin networks.
  • Apply network egress controls around the service that renders PDFs.

Validation and detection

  • Inventory applications using mPDF through 7.1.6 or unknown mPDF versions.
  • Identify routes where users can submit HTML for PDF generation.
  • Review whether HTML sanitization blocks remote or internal resource references.
  • Confirm PDF-rendering servers cannot reach sensitive internal network targets.
  • Document whether exposure is trusted-template-only or accepts untrusted HTML.
Prepared
Confidence
medium
Sources
3

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-19047 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
2Source 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

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.