CVE-2026-33205— calibre has Server-Side Request Forgery in ebook viewer backend
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 9.6.0之前版本存在代码问题漏洞，该漏洞源于calibre电子书阅读器Web视图的background-image端点存在服务端请求伪造，可能导致攻击者向任意URL执行盲GET请求并从电子书沙箱中泄露信息。
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I. Basic Information for CVE-2026-33205
Vulnerability Information
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Vulnerability Title
calibre has Server-Side Request Forgery in ebook viewer backend
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 version 9.6.0, a Server-Side Request Forgery vulnerability in the background-image endpoint of calibre e-book reader's web view allows an attacker to perform blind GET requests to arbitrary URLs and exfiltrate information out from the ebook sandbox. Version 9.6.0 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Calibre 代码问题漏洞
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 9.6.0之前版本存在代码问题漏洞，该漏洞源于calibre电子书阅读器Web视图的background-image端点存在服务端请求伪造，可能导致攻击者向任意URL执行盲GET请求并从电子书沙箱中泄露信息。
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 | < 9.6.0 | - |
|
II. Public POCs for CVE-2026-33205
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-33205 (1)
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V. Comments for CVE-2026-33205
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