CVE-2026-66710Network attack vector

Unauthenticated disclosure of local server files

Published Aug 6, 2026 · Updated Aug 6, 2026

Local file inclusion in E2Pdf 1.32.40 and earlier allows remote attackers to display local server files through unauthenticated requests. The public CNA record and Patchstack advisory do not disclose the affected PHP file, function, request parameter, or exact include operation. No account or user interaction is required; readable files can expose server-side data, including credentials, subject to file permissions and configuration.

CVSS severity8.1
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Local file inclusion in E2Pdf 1.32.40 and earlier allows remote attackers to display local server files through unauthenticated requests. The public CNA record and Patchstack advisory do not disclose the affected PHP file, function, request parameter, or exact include operation. No account or user interaction is required; readable files can expose server-side data, including credentials, subject to file permissions and configuration.

The record

CVE
CVE-2026-66710
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
E2Pdf
Product
E2Pdf
Classifications
CWE-98, CAPEC-252, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.32.40 changes=[{"at":"1.32.43","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

E2Pdf · E2Pdfversion=n/a <=1.32.40 changes=[{"at":"1.32.43","status":"unaffected"}]

Published CVSS scores

8.1PatchstackCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-98Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CAPEC-252PHP Local File Inclusion
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo