CVE-2026-113442
Cross-Site Scripting in extension "TYPO3 Fluid-Form by coding.ms" (fluid_form)
Description
Values entered by visitors were placed into the HTML summary email without being escaped. An unauthenticated attacker could use this to inject HTML into an email that is shown to the recipient.
INFO
Published Date :
Oct. 20, 2026, 10:17 a.m.
Last Modified :
Oct. 20, 2026, 10:17 a.m.
Remotely Exploit :
Yes !
Source :
f4fb688c-4412-4426-b4b8-421ecf27b14a
Affected Products
The following products are affected by CVE-2026-113442
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | f4fb688c-4412-4426-b4b8-421ecf27b14a | ||||
| CVSS 4.0 | MEDIUM | f4fb688c-4412-4426-b4b8-421ecf27b14a |
Solution
- Sanitize all user input displayed in emails.
- Implement context-aware output encoding.
- Validate and filter email content.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-113442.
| URL | Resource |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-2026-033 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-113442 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-113442
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-113442 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-113442 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by f4fb688c-4412-4426-b4b8-421ecf27b14a
Oct. 20, 2026
Action Type Old Value New Value Added Description Values entered by visitors were placed into the HTML summary email without being escaped. An unauthenticated attacker could use this to inject HTML into an email that is shown to the recipient. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/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 Added CWE CWE-79 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/113xxx/CVE-2026-113442.json">CVE-2026-113442</a> Added Reference https://typo3.org/security/advisory/typo3-ext-sa-2026-033