CVEvulnerability

CVE-2021-22886

6.1 MEDIUM Published 2021-03-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-79

Description

Rocket.Chat before 3.11, 3.10.5, 3.9.7, 3.8.8 is vulnerable to persistent cross-site scripting (XSS) using nested markdown tags allowing a remote attacker to inject arbitrary JavaScript in a message. This flaw leads to arbitrary file read and RCE on Rocket.Chat desktop app.

Affected configurations

• rocket.chat rocket.chat (< 3.8.8) • rocket.chat rocket.chat (>= 3.9.0 < 3.9.7) • rocket.chat rocket.chat (>= 3.10.0 < 3.10.5) • rocket.chat rocket.chat 3.11.0

Related

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References