Vulnerability Details : CVE-2021-39250
Potential exploit
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).
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-39250
- cpe:2.3:a:invisioncommunity:invision_power_board:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-39250
0.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-39250
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST |
CWE ids for CVE-2021-39250
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-39250
-
https://invisioncommunity.com/release-notes/4651-r102/
4.6.5.1 - Release Notes - Invision CommunityRelease Notes;Vendor Advisory
-
https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/
SSD Advisory – IP-Board Stored XSS to RCE Chain - SSD Secure DisclosureExploit;Third Party Advisory
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