CVE-2022-36105Network attack vector

User enumeration via skipped invalid-user hashing

Published Sep 13, 2022 · Updated Apr 23, 2025

Observable timing discrepancy in affected TYPO3 CMS releases allows remote attackers to enumerate users via login response times. AbstractUserAuthentication skips authentication-service work when no user record is found, so only existing accounts incur password hashing or remote-service latency. The frontend and backend authentication endpoints require no account; disclosure is limited to whether a tested username exists.

CVSS severity5.3
Medium
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable timing discrepancy in affected TYPO3 CMS releases allows remote attackers to enumerate users via login response times. AbstractUserAuthentication skips authentication-service work when no user record is found, so only existing accounts incur password hashing or remote-service latency. The frontend and backend authentication endpoints require no account; disclosure is limited to whether a tested username exists.

The record

CVE
CVE-2022-36105
Published
Sep 13, 2022
Updated
Apr 23, 2025
Vendor
in2code GmbH
Product
TYPO3 CMS
Classifications
CWE-208, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=>= 10.0.0, < 10.4.32
  2. Affected versionversion=>= 11.0.0, < 11.5.16
  3. Affected versionversion=>= 7.0.0, < 7.6.58
  4. Affected versionversion=>= 8.0.0, < 8.7.48
  5. Affected versionversion=>= 9.0.0, < 9.5.37

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

in2code GmbH · TYPO3 CMSversion=>= 10.0.0, < 10.4.32; version=>= 11.0.0, < 11.5.16; version=>= 7.0.0, < 7.6.58; version=>= 8.0.0, < 8.7.48; version=>= 9.0.0, < 9.5.37

Published CVSS scores

4.9TYPO3 Security TeamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C
5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.

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

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-208Observable Timing Discrepancy
T1087Account Discovery

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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