CVE-2026-30853— calibre has a Path Traversal Leading to Arbitrary File Write
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 9.5.0之前版本存在路径遍历漏洞，该漏洞源于RocketBook输入插件存在路径遍历，可能导致写入任意文件。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-30853
Vulnerability Information
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Vulnerability Title
calibre has a Path Traversal Leading to Arbitrary File Write
Source: CVE Program / CVE List V5
Vulnerability Description
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to 9.5.0, a path traversal vulnerability in the RocketBook (.rb) input plugin (src/calibre/ebooks/rb/reader.py) allows an attacker to write arbitrary files to any path writable by the calibre process when a user opens or converts a crafted .rb file. This is the same bug class fixed in CVE-2026-26065 for the PDB readers, but the fix was never applied to the RB reader. This vulnerability is fixed in 9.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L
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 9.5.0之前版本存在路径遍历漏洞，该漏洞源于RocketBook输入插件存在路径遍历，可能导致写入任意文件。
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 | < 9.5.0 | - |
|
II. Public POCs for CVE-2026-30853
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-30853 (1)
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V. Comments for CVE-2026-30853
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