Is CVE-2026-33206 actively exploited?

No active exploitation of CVE-2026-33206 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33206 be exploited remotely?

No. CVE-2026-33206 requires local access to exploit.

What is the CVSS score of CVE-2026-33206?

CVE-2026-33206 has a CVSS score of 6.3 (MEDIUM).

HOME VULNERABILITIESCVE-2026-33206

MEDIUM

CVE-2026-33206

CWE-23Published: March 27, 2026· Updated: Mar 30, 2026

6.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official Description

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a path traversal vulnerability exists in Calibre' handling of images in Markdown and other similar text-based files allowing an attacker to include arbitrary files from the file system into the converted book. Additionally, missing authentication and server-side request forgery in the background-image endpoint in the ebook reader web view allow the files to be exfiltrated without additional interaction. Version 9.6.0 contains a fix.

NVD Source

Technical Analysis

CVE-2026-33206 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.3.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.