Vulnerability · Published Nov 3, 2026 · Assigned by TYPO3
CVE-2026-120332Cross-Site Scripting in extension "Mail" (mail)
Medium 5.1
In plain English
A medium-severity cross-site scripting in Extension "Mail" from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.3%top 76.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TYPO3 | Extension "Mail" | 4.0.0 – before 4.2.00 – before 3.12.5 |
Weakness: CWE-79 · Vector: 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
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-037 vendor-advisory