CVE-2026-59943 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-59943MEDIUM

Dompdf: Embedded SVG images can leak existence of files and directories within the filesystem

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   N   N   L   N   N    6.3   .0026   17.7     —

AFFECTED
  Product  Versions   Fixed
  dompdf   < 3.1.6 –  —

TIMELINE
  Jul 7   Reserved by GitHub_M
  Jul 28  EXPLOIT PUBLISHED — CVE-2026-59943 (dompdf). Public exploit reference added.
  Jul 28  Published (CNA: GitHub_M)
  Aug 4   EXPLOIT PUBLISHED — CVE-2026-59943 (dompdf). Public exploit reference added.

CWE-209 · CNA: GitHub_M · CVSS v4.0 · 3 references · NVD status: Analyzed

Description

Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, if a malicious actor can supply unrestricted content for rendering by Dompdf they can utilize the SVG rendering functionality to leak filesystem information when rendering PDF files using image references within a data-URI encoded SVG document. Using an <image> element inside a data-URI embedded SVG, an attacker can attempt to embed other files via the href or xlink:href attributes. When processing a file that does not exist (e.g. file:///DOESNOTEXIST), dompdf behaves differently than it does when accessing a file or directory that actually exists on the filesystem. This issue has been fixed in version 3.16.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 7, 2026	Reserved	Reserved by GitHub_M
July 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-59943 (dompdf). Public exploit reference added.
July 28, 2026	Published	Published (CNA: GitHub_M)
August 4, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-59943 (dompdf). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
dompdf	dompdf	—	< 3.1.6	—

Weaknesses

CWE-209

References (3)

https://github.com/dompdf/dompdf/commit/6a58996865db05d8fede748507e50ac4b8c5bfd0 [Patch]
https://github.com/dompdf/dompdf/releases/tag/v3.1.6 [Release Notes]
https://github.com/dompdf/dompdf/security/advisories/GHSA-j8qw-6jw8-r297 [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-59943 at cve.org

Vendors: dompdf

Weaknesses: CWE-209

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-59943 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.