High severity · published Jan 17, 2022
CVE-2021-4164
calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)
8.8
CVSS
0.5%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Calibre-web · Janeczku
before 0.6.15 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4164
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-4164
Patch
https://github.com/janeczku/calibre-web/commit/785726deee13b4d56f6c3503dd57c1e3eb7d6f30
Exploit
https://huntr.dev/bounties/2debace1-a0f3-45c1-95fa-9d0512680758
More from Calibre-web
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CVE-2022-0939
Server-Side Request Forgery (SSRF) in GitHub repository janeczku/calibre-web prior to 0.6.18
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CVE-2022-0767
Server-Side Request Forgery (SSRF) in GitHub repository janeczku/calibre-web prior to 0.6.17
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CVE-2025-7404
Calibre Web 0.6.24 & Autocaliweb 0.7.0 - Blind C
9.8
CVE-2023-2106
Weak Password Requirements in GitHub repository janeczku/calibre-web prior to 0.6.20
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CVE-2022-2525
Improper Restriction of Excessive Authentication Attempts in GitHub repository janeczku/calibre-web prior to 0.6.20
