Cross-Site Scripting in extension "Mail" (mail)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120332
StatePUBLISHED
AssignerTYPO3
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-03 10:17:18 UTC
Updated2026-11-03 16:30:49 UTC
DescriptionThe HTML content of mails and tracked URLs are rendered unescaped in the backend module. Backend users with access to the mail module can inject arbitrary HTML and JavaScript, which is executed in the context of other backend users viewing the mail preview or report.

Risk And Classification

Primary CVSS: v4.0 5.1 MEDIUM from f4fb688c-4412-4426-b4b8-421ecf27b14a

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
4.0f4fb688c-4412-4426-b4b8-421ecf27b14aSecondary5.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/C...
4.0CNACVSS5.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
Passive
Confidentiality
None
Integrity
None
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TYPO3 Extension Mail affected 4.0.0 4.2.0 semver Not specified
CNA TYPO3 Extension Mail affected 3.12.5 semver Not specified

References

ReferenceSourceLinkTags
typo3.org/security/advisory/typo3-ext-sa-2026-037 f4fb688c-4412-4426-b4b8-421ecf27b14a typo3.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Alexander Grein (en)

CNA: Alexander Grein (en)

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