CVE-2021-39250: XSS
Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows stored XSS, with resultant code execution, because an uploaded file can be placed in an IFRAME element within user-generated content. For code execution, the attacker can rely on the ability of an admin to install widgets, disclosure of the admin session ID in a Referer header, and the ability of an admin to use the templating engine (e.g., Edit HTML).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Invision Community (aka IPS Community Suite or IP-Board)to a version that resolves this vulnerability.Fixed in 4.6.5.1
Event History
Frequently Asked Questions
What is CVE-2021-39250?
CVE-2021-39250 is a vulnerability in Invision Community (aka IPS Community Suite or IP-Board) before version 4.6.5.1 that allows stored XSS with code execution.
What is the severity of CVE-2021-39250?
The severity of CVE-2021-39250 is medium with a CVSS score of 5.4.
How does CVE-2021-39250 work?
CVE-2021-39250 allows an attacker to upload a file that can be placed in an IFRAME element within user-generated content, leading to stored XSS and potential code execution.
How can I fix CVE-2021-39250?
To fix CVE-2021-39250, upgrade Invision Community to version 4.6.5.1 or higher.
Are there any references for CVE-2021-39250?
Yes, you can find more information about CVE-2021-39250 in the release notes of version 4.6.5.1 and in an SSD advisory.