# CVE-2026-120329: Broken Access Control in extension "Mail" (mail)

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

Saving the configuration of the mail backend module writes submitted settings to the page TSconfig without restricting them to the configuration options of the module. Backend users with access to the mail module can write arbitrary page TSconfig.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- TYPO3 / Extension "Mail" (mediaessenz/mail): ≥ 4.0.0; < 4.2.0 (affected, semver); ≥ 0; < 3.12.5 (affected, semver). Source: CNA: TYPO3

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: TYPO3

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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; source: NVD: f4fb688c-4412-4426-b4b8-421ecf27b14a

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-74

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://typo3.org/security/advisory/typo3-ext-sa-2026-037 (CNA: TYPO3; vendor-advisory)

- https://typo3.org/security/advisory/typo3-ext-sa-2026-037 (f4fb688c-4412-4426-b4b8-421ecf27b14a)

## Provenance

- CNA: TYPO3: https://www.cve.org/CVERecord?id=CVE-2026-120329; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-120329; retrieved 2026-11-03; source updated 2026-11-03

Revision: 02953301c521fa58dea87afccdbbd29548c5ae41d7e03e4f17882f380b277a44

Canonical: https://y2.dev/cve/CVE-2026-120329

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