CVE-2021-31330

medium

Description

A Cross-Site Scripting (XSS) vulnerability exists within Review Board versions 3.0.20 and 4.0 RC1 and earlier. An authenticated attacker may inject malicious Javascript code when using Markdown editing within the application which remains persistent.

References

https://www.reviewboard.org/news/2021/04/14/review-board-3-0-21-and-4-0-rc-2-security-bug-fixes-and-docker/

https://www.reviewboard.org/docs/releasenotes/reviewboard/4.0-rc-2/

https://www.reviewboard.org/docs/releasenotes/reviewboard/3.0.21/

https://mattschmidt.net/2021/04/14/review-board-xss-discovered/

Details

Source: Mitre, NVD

Published: 2022-05-11

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00566