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CVE-2026-26065— calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution

Quick assessment

Affected
kovidgoyal calibre
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Calibre是印度Kovid Goyal个人开发者的一个开源免费的全能电子书阅读管理与格式转换工具。 calibre 9.2.1及之前版本存在路径遍历漏洞，该漏洞源于PDB阅读器存在路径遍历缺陷，可能导致任意文件写入、代码执行或拒绝服务。

AI Predicted 8.6 Difficulty: Easy EPSS 0.56% · P44
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I. Basic Information for CVE-2026-26065

Vulnerability Information
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Vulnerability Title
calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below are vulnerable to Path Traversal through PDB readers (both 132-byte and 202-byte header variants) that allow arbitrary file writes with arbitrary extension and arbitrary content anywhere the user has write permissions. Files are written in 'wb' mode, silently overwriting existing files. This can lead to potential code execution and Denial of Service through file corruption. This issue has been fixed in version 9.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Calibre 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Calibre是印度Kovid Goyal个人开发者的一个开源免费的全能电子书阅读管理与格式转换工具。 calibre 9.2.1及之前版本存在路径遍历漏洞，该漏洞源于PDB阅读器存在路径遍历缺陷，可能导致任意文件写入、代码执行或拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kovidgoyal calibre < 9.3.0 -

II. Public POCs for CVE-2026-26065

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III. Intelligence Information for CVE-2026-26065

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Vendor Advisories for CVE-2026-26065 (1)

IV. Related Vulnerabilities

Same product: calibre
Same vendor: kovidgoyal
Same weakness: CWE-22

V. Comments for CVE-2026-26065

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