Bug 2443412 (CVE-2026-27810) - CVE-2026-27810 calibre: Calibre: HTTP Response Header Injection via unsanitized query parameter
Summary: CVE-2026-27810 calibre: Calibre: HTTP Response Header Injection via unsanitiz...
Keywords:
Status: NEW
Alias: CVE-2026-27810
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2443781
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-27 20:01 UTC by OSIDB Bzimport
Modified: 2026-03-02 11:20 UTC (History)
0 users

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Description OSIDB Bzimport 2026-02-27 20:01:28 UTC 
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.4.0, an HTTP Response Header Injection vulnerability in the calibre Content Server allows any authenticated user to inject arbitrary HTTP headers into server responses via an unsanitized `content_disposition` query parameter in the `/get/` and `/data-files/get/` endpoints. All users running the calibre Content Server with authentication enabled are affected. The vulnerability is exploitable by any authenticated user and can also be triggered by tricking an authenticated victim into clicking a crafted link. Version 9.4.0 contains a fix for the issue.
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