CVE-2021-39249

MEDIUM

Invision Power Board < 4.6.5.1 - Reflected Cross-Site Scripting via Predictable Uploaded Filename

Title source: llm
STIX 2.1

Description

Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mt_rand function.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/
Release Notes, Vendor Advisory x_refsource_misc
https://invisioncommunity.com/release-notes/4651-r102/

Scores

CVSS v3 6.1
EPSS 0.0077
EPSS Percentile 50.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-330
Status published
Products (1)
invisioncommunity/invision_power_board < 4.6.5.1
Published Aug 17, 2021
Tracked Since Feb 18, 2026