Typo3
CVE-2026-120331: 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 t
CVE-2026-120331 Nov 3, 2026 Source: Vendor
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.
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-120331
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CVE-2026-120331
BR2026-0000-041535
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Credited as Alexander Grein