CVE-2022-23504

TYPO3 contains Sensitive Information Disclosure via YAML Placeholder Expressions in Site Configuration

MEDIUM

4.9

CVSS Score

Published: December 14, 2022 at 07:58 AM UTC

Updated: June 17, 2026 at 04:30 AM UTC

1 product affected across 1 vendorTYPO3

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Severity

MEDIUM4.9

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

TYPO3 is an open source PHP based web content management system. Versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1 are subject to Sensitive Information Disclosure. Due to the lack of handling user-submitted YAML placeholder expressions in the site configuration backend module, attackers could expose sensitive internal information, such as system configuration or HTTP request messages of other website visitors. A valid backend user account having administrator privileges is needed to exploit this vulnerability. This issue has been patched in versions 9.5.38 ELTS, 10.4.33, 11.5.20, 12.1.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

TYPO3 · TYPO3composer

95%

v < 10.4.33v < 11.5.20v < 12.1.1v < 9.5.3810.0.0 ≤ v < 10.4.3311.0.0 ≤ v < 11.5.2012.0.0 ≤ v < 12.1.19.0.0 ≤ v < 9.5.38

Affected range stops below 10.4.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.5.20, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.5.38, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/TYPO3/typo3/security/advisories/GHSA-8w3p-qh3x-6gjr

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200CWE-917

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