CVE-2022-3993Public exploitNetwork attack vector

Account compromise via unrestricted authentication guessing

Published Nov 14, 2022 · Updated Apr 30, 2025

Improper restriction of authentication attempts in Kavita before 0.6.0.3 allows remote attackers to compromise accounts through repeated guesses. AccountController's anonymous account workflows accept repeated guesses and return distinct failures for unknown accounts and invalid tokens. No authentication or user interaction is required; successful guessing compromises the targeted account and its accessible library data.

CVSS severity9.4
Critical
EPSS probability1.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper restriction of authentication attempts in Kavita before 0.6.0.3 allows remote attackers to compromise accounts through repeated guesses. AccountController's anonymous account workflows accept repeated guesses and return distinct failures for unknown accounts and invalid tokens. No authentication or user interaction is required; successful guessing compromises the targeted account and its accessible library data.

The record

CVE
CVE-2022-3993
Published
Nov 14, 2022
Updated
Apr 30, 2025
Vendor
Kareadita
Product
Kavita
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 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?

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

  1. Affected versionversion=unspecified <0.6.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kareadita · Kavitaversion=unspecified <0.6.0.3

Published CVSS scores

9.4huntr.devCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

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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