CVE-2021-39250

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).

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0

3.5 LOWAV:N/AC:M/Au:S/C:N/I:P/A:N

EPSS

0.81% chance of exploitation in the next 30 days, 55th percentile

Published

2021-08-17

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/

References

• CVE Record
• NVD entry

Related

• CVE-2021-39249
• CVE-2021-39267
• CVE-2021-39246
• CVE-2021-39268
• CVE-2021-39245
• CVE-2021-3927