Vulnerability · Published Mar 26, 2021 · Assigned by hackerone
CVE-2021-22886
Medium 6.1
In plain English
A medium-severity cross-site scripting in Rocket.Chat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.9%top 20.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Rocket.Chat | Fixed in 3.11, 3.10.5, 3.9.7, 3.8.8 |
Weakness: CWE-79
References
- https://docs.rocket.chat/guides/security/security-updates x_refsource_MISC
- https://hackerone.com/reports/1014459 x_refsource_MISC
- https://github.com/RocketChat/Rocket.Chat/pull/20430 x_refsource_MISC