CVE-2022-23504Network attack vector

Sensitive-data disclosure via unguarded YAML placeholders

Published Dec 14, 2022 · Updated Apr 21, 2025

Expression language injection in affected TYPO3 CMS releases allows remote authenticated users to disclose sensitive internal data. The site-configuration save path writes administrator-supplied strings without rejecting new placeholder expressions, which the YAML loader resolves against runtime data. Exploitation requires an administrator backend account and user interaction; exposed data includes system configuration and other visitors' HTTP requests.

CVSS severity5.7
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Expression language injection in affected TYPO3 CMS releases allows remote authenticated users to disclose sensitive internal data. The site-configuration save path writes administrator-supplied strings without rejecting new placeholder expressions, which the YAML loader resolves against runtime data. Exploitation requires an administrator backend account and user interaction; exposed data includes system configuration and other visitors' HTTP requests.

The record

CVE
CVE-2022-23504
Published
Dec 14, 2022
Updated
Apr 21, 2025
Vendor
in2code GmbH
Product
TYPO3 CMS
Classifications
CWE-917, CWE-200, T1005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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, < 10.4.33
  2. Affected versionversion=>= 11.0.0, < 11.5.20
  3. Affected versionversion=>= 12.0.0, < 12.1.1
  4. Affected versionversion=>= 9.0.0, < 9.5.38

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

in2code GmbH · TYPO3 CMSversion=>= 10.0.0, < 10.4.33; version=>= 11.0.0, < 11.5.20; version=>= 12.0.0, < 12.1.1; version=>= 9.0.0, < 9.5.38

Published CVSS scores

5.3TYPO3 ProjectCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
5.7GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-917Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

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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