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CVE-2026-59943— Dompdf: Embedded SVG images can leak existence of files and directories within the filesystem

Quick assessment

Affected
dompdf dompdf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dompdf是dompdf团队开源的一个 HTML 到 PDF 的转换器。 dompdf 3.1.6之前版本存在信息泄露漏洞，该漏洞源于SVG渲染功能对文件访问处理不当，可能导致恶意攻击者利用data-URI编码的SVG文档泄露文件系统信息。

CVSS 6.3 · Medium EPSS 0.42% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
dompdf dompdf < 3.1.6 affected
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I. Basic Information for CVE-2026-59943

Vulnerability Information
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Vulnerability Title
Dompdf: Embedded SVG images can leak existence of files and directories within the filesystem
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
dompdf 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dompdf是dompdf团队开源的一个 HTML 到 PDF 的转换器。 dompdf 3.1.6之前版本存在信息泄露漏洞，该漏洞源于SVG渲染功能对文件访问处理不当，可能导致恶意攻击者利用data-URI编码的SVG文档泄露文件系统信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
dompdf dompdf < 3.1.6 -

II. Public POCs for CVE-2026-59943

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III. Intelligence Information for CVE-2026-59943

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Patches & Fixes for CVE-2026-59943 (1)

Vendor Advisories for CVE-2026-59943 (1)

Vendor Pages for CVE-2026-59943 (1)

Same Patch Batch · dompdf · 2026-07-28 · 6 CVEs total

CVE-2026-56722 6.3 MEDIUM Dompdf: Local file read due to improper file path validation in SVG images encoded as data
CVE-2026-59941 6.3 MEDIUM Dompdf: Uncontrolled resource consumption based on declared BMP dimensions
CVE-2026-59942 6.3 MEDIUM Dompdf: Denial of Service (DoS) via Resource Exhaustion using Oversized Image Bitmaps
CVE-2026-55554 2.3 LOW Dompdf: Chroot Validation Bypass
CVE-2026-55555 2.3 LOW Dompdf: File existence oracle via font-face stylesheet declaration

IV. Related Vulnerabilities

Same product: dompdf
Same vendor: dompdf
Same weakness: CWE-209

V. Comments for CVE-2026-59943

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