Vulnerability · Published Jun 17, 2026 · Assigned by mitre
CVE-2025-26240
High 8.4
In plain English
A high-severity buffer overflow in the pdfkit package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.4%top 66.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | pdfkit | no fix listed | DEBIAN-CVE-2025-26240 |
| PyPI | pdfkit | no fix listed | GHSA-9g3x-6x24-vf9f |
| PyPI | pdfkit | no fix listed | PYSEC-2026-2860 |
| Ubuntu:22.04:LTS | pdfkit | no fix listed | UBUNTU-CVE-2025-26240 |
| Ubuntu:24.04:LTS | pdfkit | no fix listed | UBUNTU-CVE-2025-26240 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H