CVE-2026-120331 - Vulnerability Details - OpenCVE

Content of external URL mails, their stylesheets and images to embed is fetched by the server without validating the target host. Backend users with access to the mail module can make the server send requests to hosts in the internal network.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

TYPO3

Extension "Mail"

unaffected

Version	Status	Constraints
`4.0.0`	affected	< 4.2.0
`0`	affected	< 3.12.5

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://typo3.org/security/advisory/typo3-ext-sa-2026-037

History

Tue, 03 Nov 2026 10:00:00 +0000

Type	Values Removed	Values Added
Description		Content of external URL mails, their stylesheets and images to embed is fetched by the server without validating the target host. Backend users with access to the mail module can make the server send requests to hosts in the internal network.
Title		Server-Side Request Forgery in extension "Mail" (mail)
Weaknesses		CWE-918
References		https://typo3.org/security/advisory/typo3-ext-sa-2026-037
Metrics		cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: TYPO3

Published: 2026-11-03T09:56:05.114Z

Updated: 2026-11-03T09:56:05.114Z

Reserved: 2026-11-01T13:30:23.579Z

Link: CVE-2026-120331

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-11-03T10:17:17.970

Modified: 2026-11-03T10:17:17.970

Link: CVE-2026-120331

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-918

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