What’s Vulnerable › Vulnerabilities

CVE-2019-17220

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-10-21 · updated 2026-06-17
• Weakness: CWE-79

Description

Rocket.Chat before 2.1.0 allows XSS via a URL on a ![title] line.

Affected products

• Rocket.Chat: before 2.1.0 — fixed in 2.1.0

How to fix

Upgrade to a fixed version: Rocket.Chat 2.1.0. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/154944/Rocket.Chat-2.1.0-Cross-Site-Scripting.html
• https://github.com/RocketChat/Rocket.Chat/commits/develop
• https://github.com/RocketChat/Rocket.Chat/releases
• https://www.nezami.me/
• http://packetstormsecurity.com/files/154944/Rocket.Chat-2.1.0-Cross-Site-Scripting.html
• https://github.com/RocketChat/Rocket.Chat/commits/develop
• https://github.com/RocketChat/Rocket.Chat/releases
• https://www.nezami.me/

Get alerted when CVE-2019-17220 or the next vulnerability affects your stack