{"cve":"CVE-2026-73248","nvd":{"published":"2026-08-11T22:19:05.553","modified":"2026-10-24T15:10:00.190","status":"Deferred","description":"calibre is an e-book manager. Prior to 9.12.0, calibre processes attacker-controlled composite_template metadata from a malicious EPUB, OPF, PDF, or similar file through program: and a nested template() call whose formatter does not inherit allow_python_templates=False, allowing a nested python: template to reach compile_python_template and execute arbitrary Python code when the file is opened or imported. This issue is fixed in version 9.12.0.","cvss_v4":{"vector":"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","score":8.5},"cvss_v3":null,"cwes":["CWE-94","CWE-95"],"references":["https://github.com/kovidgoyal/calibre/commit/dac9990458374a81a5372a768bba6527d965aac8","https://github.com/kovidgoyal/calibre/releases/tag/v9.12.0","https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4f7g-rjfp-hmvx","https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4f7g-rjfp-hmvx"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-73248","score":0.00197,"percentile":0.09354,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}