Dashboard / CVE-2026-53511

CVE-2026-53511

HIGH
MEDIUM Priority: 0.02 BB Relevance: 42/100
Published: 2026-07-07 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: High
VI: High
VA: High

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.

Weakness Classification (1)

References & Advisories (4)

Bug Bounty Relevance

42 / 100
✓ No authentication
✓ Low complexity

CVSS Score

8.5 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.22%
Raw Score 0.002200
Percentile 12.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00220
2026-10-28
0.00220

Intelligence Sources

nvd ref →

External Links