Vulnerability · Published Jun 24, 2026 · Assigned by GitHub_M
CVE-2026-49278Rocket.Chat: Livechat Visitor Profile Disclosure Leaks Bearer Token and Enables Visitor Impersonation
Medium 6.7
In plain English
A medium-severity security flaw in Rocket.Chat from RocketChat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Official description
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, in the visitors.info endpoint, https://developer.rocket.chat/apidocs/get-visitor-information-by-id-1, token is returned in the response. It looks like there's no use case for the token to be present in the response and it would be a good security practice to remove it altogether. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RocketChat | Rocket.Chat | >= 8.5.0-rc.0, < 8.5.0>= 8.4.0-rc.0, < 8.4.2>= 8.3.0-rc.0, < 8.3.4>= 8.2.0-rc.0, < 8.2.4>= 8.1.0-rc.0, < 8.1.5>= 8.0.0-rc.0, < 8.0.6>= 7.11.0-rc.0, < 7.13.8< 7.10.12 |
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L