CVE-2026-25636

highpriority · track · 31EPSS 0.002 · 14 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (14th) EPSS

CVSS 7.8 · high

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

calibre is an e-book manager. In 9.1.0 and earlier, a path traversal vulnerability in Calibre's EPUB conversion allows a malicious EPUB file to corrupt arbitrary existing files writable by the Calibre process. During conversion, Calibre resolves CipherReference URI from META-INF/encryption.xml to an absolute filesystem path and opens it in read-write mode, even when it points outside the conversion extraction directory. This vulnerability is fixed in 9.2.0.

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.18.2highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Hsecondary · ENISA EU

v3.18.2highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Hsecondary · security-advisories@github.comexploitability 1.8 · impact 5.8

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-73USCWE-94US

affected products (2)

Products and version ranges known to be affected.

kovidgoyal Calibre≤ < 9.2.0enisa_euvdEU
calibre-ebook calibre< 9.2.0nvdUScpe:2.3:a:calibre-ebook:calibre:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2026-02-06modified 2026-06-17

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+12539 more

references (9)

External citations — patches, advisories, analysis.

scry

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