CVE-2022-0273Network attack vector

Unauthorized public shelf creation via unchecked flag

Published Jan 30, 2022 · Updated Aug 2, 2024

Improper access control in Calibre-Web before 0.6.16 allows remote authenticated users to create public shelves via crafted requests. The create_edit_shelf function treated any truthy is_public value as permission to save a shelf as public instead of requiring the expected on value. A low-privilege account must reach the shelf-creation endpoint; the bounded impact is unauthorized sharing of library contents, with no evidence of service interruption.

CVSS severity6.5
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Calibre-Web before 0.6.16 allows remote authenticated users to create public shelves via crafted requests. The create_edit_shelf function treated any truthy is_public value as permission to save a shelf as public instead of requiring the expected on value. A low-privilege account must reach the shelf-creation endpoint; the bounded impact is unauthorized sharing of library contents, with no evidence of service interruption.

The record

CVE
CVE-2022-0273
Published
Jan 30, 2022
Updated
Aug 2, 2024
Vendor
Calibre-Web
Product
Calibre-Web
Classifications
CWE-284, CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.6.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Calibre-Web · Calibre-Webversion=unspecified <0.6.16

Published CVSS scores

4.0NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.3huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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