CVE-2026-53511
published 2026-07-07CVE-2026-53511: 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…
PriorityP344high8.5CVSS 4.0
AVLACLATNPRNUIPVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.20%
9.2th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| kovidgoyal | calibre | < 9.10.0 | 9.10.0 |
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Bugzilla
CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing [fedora-all]
bugzilla·2026-07-10·CVSS 8.5
CVE-2026-53511 [HIGH] CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing [fedora-all]
CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing
bugzilla·2026-07-07·CVSS 8.5
CVE-2026-53511 [HIGH] CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing
CVE-2026-53511 calibre: Calibre: Arbitrary code execution via malicious e-book file processing
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.
https://github.com/kovidgoyal/calibre/commit/712f4e1ff5c1e798c335bef3bacc4efdee052e9chttps://github.com/kovidgoyal/calibre/releases/tag/v9.10.0https://github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47https://lists.debian.org/debian-lts-announce/2026/08/msg00034.htmlhttps://github.com/kovidgoyal/calibre/security/advisories/GHSA-2j4m-2q7x-2c47
2026-07-07
Published