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High 8.2Published Mar 27, 2026

CVE-2026-33206calibre has a path traversal vulnerability

Updated under an hour ago ()

Does this affect you?

It affects kovidgoyal calibre and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
8.2 HIGH (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Weakness (CWE)
CWE-23
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Mar 27, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
kovidgoyal calibre
kovidgoyal:calibre (from the name)
before 9.6.0
CNA record
calibre-ebook calibre
calibre-ebook:calibre
before 9.6.0
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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CVE-2026-33206: calibre has a path traversal vulnerability | InfoSec Signals