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CVE-2026-46723 TYPO3 CVE debrief

CVE-2026-46723 is a medium-severity information disclosure vulnerability in TYPO3's indexed search extension. The `additional_tables` configuration parameter in the page and tt_content indexers fails to validate table and field names, allowing a backend user with indexer configuration permissions to exfiltrate sensitive data from internal TYPO3 tables into the search index. Published on 2026-05-19, this issue carries a CVSS 4.0 score of 5.9 (MEDIUM) with a vector indicating network attack vector, low attack complexity, privileged attacker requirements, and high confidentiality impact on the vulnerable component. The vulnerability is classified under CWE-668 (Exposure of Resource to Wrong Sphere). TYPO3 has issued security advisory TYPO3-EXT-SA-2026-011 addressing this flaw.

Vendor
TYPO3
Product
Extension "Faceted Search"
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-19
Original CVE updated
2026-05-19
Advisory published
2026-05-19
Advisory updated
2026-05-19

Who should care

TYPO3 administrators, security teams managing TYPO3 CMS deployments, and organizations relying on indexed search functionality with multi-user backend environments

Technical summary

The TYPO3 indexed search extension's `additional_tables` configuration accepts arbitrary table and field names without validation. A backend user possessing indexer configuration edit permissions can leverage this weakness to copy sensitive data from internal TYPO3 system tables into the publicly accessible search index, resulting in unauthorized information disclosure. The vulnerability requires high privileges (backend administrative access) but poses significant confidentiality risk to the affected system component.

Defensive priority

medium

Recommended defensive actions

  • Review and restrict backend user permissions for indexer configuration access
  • Apply TYPO3 security advisory TYPO3-EXT-SA-2026-011 patches when available
  • Audit existing indexer configurations for unauthorized table references
  • Monitor search index contents for unexpected sensitive data inclusion
  • Implement principle of least privilege for TYPO3 backend administrative roles

Evidence notes

Vulnerability description and CVSS vector sourced from NVD record. Vendor identification derived from reference domain analysis pointing to TYPO3. Advisory reference confirms TYPO3 as affected vendor. No KEV listing present.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46723 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46723

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

  • CVE-2026-46723 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46723

    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-2026-011

    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.