CVE-2022-0767Public exploitNetwork attack vector

Localhost access via unchecked HTTP redirects

Published Mar 7, 2022 · Updated Aug 2, 2024

SSRF in Calibre-Web before 0.6.17 allows remote authenticated users to make the server request localhost through an HTTP redirect. The save_cover_from_url function validates only the initial cover URL, then requests it with redirects enabled without checking the redirected destination. A user with cover-upload permission can direct the application into sending GET requests to local HTTP services, while the returned content is handled only as cover-image data.

CVSS severity9.1
Critical
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Calibre-Web before 0.6.17 allows remote authenticated users to make the server request localhost through an HTTP redirect. The save_cover_from_url function validates only the initial cover URL, then requests it with redirects enabled without checking the redirected destination. A user with cover-upload permission can direct the application into sending GET requests to local HTTP services, while the returned content is handled only as cover-image data.

The record

CVE
CVE-2022-0767
Published
Mar 7, 2022
Updated
Aug 2, 2024
Vendor
Calibre-Web
Product
Calibre-Web
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 7, 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 <0.6.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Calibre-Web · Calibre-Webversion=unspecified <0.6.17

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.1huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
9.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

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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