---
id: CVE-2026-78741
title: >-
  Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) in the
  wysiwyg-CKEditor image upload feature.
summary: >-
  Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) in the
  wysiwyg-CKEditor image upload feature.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:04:24.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78741'
references:
  - url: 'https://hekk.one/posts/research/cve-2026-78741/'
    label: cve@mitre.org
  - url: 'https://hekk.one/posts/research/cve-2026-78741/'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-09T13:04:00.561056Z'
ingestedAt: '2026-09-08T21:11:12.368Z'
epss: 0.00253
epssPercentile: 0.1492
---

## Overview

Silverpeas Core <=6.4.6 is vulnerable to Cross Site Scripting (XSS) in the wysiwyg-CKEditor image upload feature.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.