How severe is CVE-2022-23504?

CVE-2022-23504 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2022-23504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23504?

CVE-2022-23504 affects Typo3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-23504?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-23504 published?

CVE-2022-23504 was published on 2022-12-14 and last updated on 2026-06-17.

CVE-2022-23504

CVE-2022-23504 is a medium-severity vulnerability in Typo3 with a CVSS 3.x base score of 5.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-917.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-917
Affected product: Typo3
Published: 2022-12-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-23504?: 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.
How severe is CVE-2022-23504?: CVE-2022-23504 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2022-23504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23504?: CVE-2022-23504 affects Typo3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-23504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-23504 published?: CVE-2022-23504 was published on 2022-12-14 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*

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