CVE-2018-13878

6.1 mediumEPSS 0.8%

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

CVSS 3.0

6.1 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2018-07-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rocket.chat:rocket.chat

References

https://github.com/RocketChat/Rocket.Chat/pull/10793
https://github.com/RocketChat/Rocket.Chat/pull/10793

Check your stack JSON