All vulnerabilities

Servers and applications

CVE-2018-13878

An XSS issue was discovered in packages/rocketchat-mentions/Mentions.js in Rocket.Chat before 0.65. The real name of a username is displayed unescaped when the user is mentioned (using the @ symbol) in a channel or private chat. Consequently, it is possible to exfiltrate the secret token of every user and also admins in the channel.

Severity
Medium 6.1
Published
11 Jul 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
0.65
Exploit chance
0.8% in the next 30 daysHigher than 55% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Cross-site scripting (CWE-79)
Attack
Over the network · No login needed · 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:N/UI:R/S:C/C:L/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Rocket.ChatServers and applications · cpe:a:rocket.chat:rocket.chat
  • Every version before 0.65

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-13878
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-13878