Authenticated PHP code execution via form configuration
Published Dec 14, 2022 · Updated Apr 18, 2025
Code injection in TYPO3 CMS allows remote authenticated users with Form module access to execute PHP code through Form Designer. ConfigurationManager and FormPersistenceManager resolved TypoScript-like instructions embedded in user-controlled form YAML instead of limiting evaluation to trusted TypoScript override arrays. Exploitation requires a valid backend account, access to the Form module, and applicable formDefinitionOverrides instructions; successful code runs with the web application's privileges.
Summary
What happened
Code injection in TYPO3 CMS allows remote authenticated users with Form module access to execute PHP code through Form Designer. ConfigurationManager and FormPersistenceManager resolved TypoScript-like instructions embedded in user-controlled form YAML instead of limiting evaluation to trusted TypoScript override arrays. Exploitation requires a valid backend account, access to the Form module, and applicable formDefinitionOverrides instructions; successful code runs with the web application's privileges.
The record
- CVE
- CVE-2022-23503
- Published
- Dec 14, 2022
- Updated
- Apr 18, 2025
- Vendor
- in2code GmbH
- Product
- TYPO3 CMS
- Classifications
- CWE-94, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 14, 2022CVE publishedPublication date reported by the CVE source.
- Apr 18, 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.
- Affected versionversion=>= 10.0.0, < 10.4.33
- Affected versionversion=>= 11.0.0, < 11.5.20
- Affected versionversion=>= 12.0.0, < 12.1.1
- Affected versionversion=>= 8.0.0, < 8.7.49
- Affected versionversion=>= 9.0.0, < 9.5.38
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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