CVE-2023-46303Network attack vector

Arbitrary local file inclusion via unrestricted resource paths

Published Oct 22, 2023 · Updated Nov 4, 2025

Path traversal in calibre before 6.19.0 allows attackers to include local files in converted e-books via crafted HTML resource links. The link_to_local_path method resolves linked resources without confining them to the HTML input's parent directory, so resource_adder packages files from elsewhere. Exploitation requires calibre to convert attacker-influenced HTML; the resulting e-book can contain local files readable by the calibre process.

CVSS severity7.5
High
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in calibre before 6.19.0 allows attackers to include local files in converted e-books via crafted HTML resource links. The link_to_local_path method resolves linked resources without confining them to the HTML input's parent directory, so resource_adder packages files from elsewhere. Exploitation requires calibre to convert attacker-influenced HTML; the resulting e-book can contain local files readable by the calibre process.

The record

CVE
CVE-2023-46303
Published
Oct 22, 2023
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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