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CVE-2026-53511

HIGH
8.5
CVSS 4.0
Description
calibre is an e-book manager. Prior to 9.10.0, a malicious EPUB, OPF, or PDF file can execute arbitrary Python code when its metadata is read by calibre, including through Add books or Edit books, by embedding a custom column definition with a python: template in calibre:user_metadata that is passed unsanitized to exec() in the template formatter. This issue is fixed in version 9.10.0.

Metadata

CVE ID
CVE-2026-53511
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-09 17:30 UTC
Published
2026-07-07 20:46 UTC
Last updated
2026-07-07 20:46 UTC
Primary CWE
CWE-94
CWE-94: Improper Control of Generation of Code ('Code Inject…
Vendor / Product
kovidgoyal / calibre
Sources
cve.org  ·  NVD

Severity & Metrics

8.5 HIGH CVSS 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
kovidgoyal calibre — < 9.10.0
Weakness (CWE)
CWESourceDescription
CWE-94 cna CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.5 HIGH 4.0 cna CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References (3)
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