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PatchSiren cyber security CVE debrief

CVE-2026-112066 TYPO3 CVE debrief

CVE-2026-112066 debrief based on the supplied source corpus. The vulnerability involves the JSON import of cookie consent configurations not respecting backend user permissions in Typo3 installations. Non-admin backend users with module access could import configurations adding arbitrary scripts to the website frontend, potentially leading to website compromise. Defenders should verify backend user permissions and review cookie consent configurations to prevent unauthorized script injection.

Vendor
TYPO3
Product
Extension "sgalinski Cookie Consent"
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-20
Advisory published
2026-10-20
Advisory updated
2026-10-20

Who should care

Defenders responsible for Typo3 installations, backend user management, and cookie consent configurations should assess exposure and verify permissions.

Why it matters

Defenders should prioritize verifying backend user permissions and reviewing cookie consent configurations to prevent unauthorized script injection and potential website compromise.

  • Verify backend user permissions to prevent unauthorized script injection
  • Review cookie consent configurations to prevent arbitrary script addition
  • Monitor website for suspicious scripts and anomalies

Technical summary

The JSON import of the cookie consent configuration in Typo3 did not respect backend user permissions. Non-admin users with module access could import configurations that add arbitrary scripts to the frontend, potentially leading to website compromise through script injection. This highlights the need for strict permission controls and configuration reviews to prevent such vulnerabilities.

Defensive priority

Defenders should prioritize verifying backend user permissions and reviewing cookie consent configurations.

Recommended defensive actions

  • Verify backend user permissions for cookie consent configuration
  • Review cookie consent configurations for arbitrary scripts
  • Monitor website for suspicious scripts

Evidence notes

The CVE record indicates that non-admin backend users could import a configuration that adds arbitrary scripts to the frontend of the website. The NVD entry is currently Deferred.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-112066 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-112066

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-112066 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-112066

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://typo3.org/security/advisory/typo3-ext-sa-2026-029

    f4fb688c-4412-4426-b4b8-421ecf27b14a

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.