CVE-2026-113459 TYPO3 - Information Disclosure

TYPO3 10 and 11 contain an information disclosure caused by embedding the configured OpenAI API key in every backend page, letting authenticated backend users read the key, exploit requires configured API key and backend authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
20 October 2026
Updated
20 October 2026
Weakness
CWE-201

Vendor fix

Update to the latest TYPO3 version where this issue is fixed or remove the API key from frontend exposure.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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