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Vulnerability record · CVE-2025-26240 · published 17 June 2026

CVE-2025-26240: Classic buffer overflow vulnerability

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.

8.4 CVSS 3.1 High EPSS 0.39% · top 69.3% CWE-120 · Classic buffer overflow Deferred
8.4CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
22 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://habuon.github.io/2025/03/12/pdfkit-vulnerability-%28CVE-2025-26240%29.html
https://www.csirt.gov.sk/the-python-pdfkit-library-vulnerability.html
https://habuon.github.io/2025/03/12/pdfkit-vulnerability-%28CVE-2025-26240%29.html

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Source: NIST National Vulnerability Database (record CVE-2025-26240), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.