# CVE-2026-112204 — Fundacja Widzialni WidzialniCMS

> As of 2026-11-09, CVE-2026-112204 is a Medium-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Fundacja Widzialni WidzialniCMS, CVSS v4.0 5.1. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-112204, most recently “WidzialniCMS < 2.5 unauthenticated file upload RCE (CVE-2026-110468, CVE-2026-110469) plus reflected XSS (CVE-2026-112204) and login lockout bypass (CVE-2026-112205)”.

**Last updated:** 2026-11-09

## What is CVE-2026-112204?

WidzialniCMS is vulnerable to Reflected XSS in the /index.php endpoint. An attacker can prepare an URL that, when opened, results in arbitrary JavaScript execution in the victim's browser, allowing e.g session cookie theft. This issue has been fixed in version 2.5.

The record classifies CVE-2026-112204 under weakness class [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79). 1 affected-product entry is recorded, across 1 vendor, listed below.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 5.1 — Medium (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-11-09

## Is CVE-2026-112204 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Fundacja Widzialni**: WidzialniCMS

## How to fix CVE-2026-112204

No vendor patch reference has been recorded for CVE-2026-112204 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-112204

1 tracked threat in the Threadlinqs corpus references CVE-2026-112204, either in the campaign’s CVE list or as an indicator on the campaign record.

- [WidzialniCMS < 2.5 unauthenticated file upload RCE (CVE-2026-110468, CVE-2026-110469) plus reflected XSS (CVE-2026-112204) and login lockout bypass (CVE-2026-112205)](https://intel.threadlinqs.com/threat/TL-2026-5552) — HIGH · 2026-11-09

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories. This product uses the NVD API but is not endorsed or certified by the NVD.

**Third-party advisory**

- [cert.pl — third party advisory](https://cert.pl/posts/2026/11/CVE-2026-110468)

**Issue tracking and product pages**

- [widzialni.org — product](https://widzialni.org/funkcjonalnosci-widzialni-cms,sd,mg,0,175)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-112204
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