Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2025-26240 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

In JazzCore python-pdfkit 1.0.0, the from_string method enables the execution of JavaScript code within the context of the server application and the exfiltration of local files.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CNA: CISA-ADPCVSS-B:8.4 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://habuon.github.io/2025/03/12/pdfkit-vulnerability-%28CVE-2025-26240%29.html CISA-ADPExploitTechnical Analysis
https://habuon.github.io/2025/03/12/pdfkit-vulnerability-%28CVE-2025-26240%29.html [email protected]ExploitTechnical Analysis
https://www.csirt.gov.sk/the-python-pdfkit-library-vulnerability.html [email protected]AdvisoryExploitTechnical Analysis

Weakness Enumeration

CWE-IDCWE NameSource
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')CISA-ADP

Affected Products

ProductVersions
JazzCore python-pdfkit
1.0.0 (semver)

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Workaround:low effort

    Use the `from_file` method instead of `from_string` to avoid parsing meta tags.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-26240
NVD Published Date:
Jun 17, 2026
NVD Last Modified:
Jun 22, 2026
Source:
[email protected]
CVE-2025-26240 Details - Not Deferred