Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-bjj5-ynf7-v7aa
Vulnerability ID VCID-bjj5-ynf7-v7aa
Aliases CVE-2026-26065
Summary calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below are vulnerable to Path Traversal through PDB readers (both 132-byte and 202-byte header variants) that allow arbitrary file writes with arbitrary extension and arbitrary content anywhere the user has write permissions. Files are written in 'wb' mode, silently overwriting existing files. This can lead to potential code execution and Denial of Service through file corruption. This issue has been fixed in version 9.3.0.
Status Published
Exploitability 0.5
Weighted Severity 8.4
Risk 4.2
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
System Score Found at
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2026-26065
cvssv4 9.3 https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8
ssvc Track https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8
cvssv4 9.3 https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
ssvc Track https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-26065
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26065
b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8 https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8
GHSA-vmfh-7mr7-pp2w https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
No exploits are available.
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H Found at https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-20T16:41:04Z/ Found at https://github.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H Found at https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-02-20T16:41:04Z/ Found at https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2w
Exploit Prediction Scoring System (EPSS)
Percentile 0.11454
EPSS Score 0.00038
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:39:25.700129+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0