Servers and applications
CVE-2018-13879
A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in…
- Severity
- Medium 5.4
- Published
- 11 Jul 2018
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 0.66
- Exploit chance
- 0.6% in the next 30 daysHigher than 49% of CVEs. EPSS by FIRST, 10 Nov 2026
- Weakness
- Cross-site scripting (CWE-79)
- Attack
- Over the network · Needs a user account · Needs someone to click or open something
- Attacker can
- Read some data · Change some data
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N- Sources
- NVD
Description
A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.
Affected software
| Software | Affected versions |
|---|---|
Rocket.ChatServers and applications · cpe:a:rocket.chat:rocket.chat |
|