Token Exposure in Rocket.Chat Communication Platform
CVE-2026-49278

6.7MEDIUM

Key Information:

Vendor

Rocketchat

Status
Rocket.chat
Vendor
CVE Published:
24 June 2026

What is CVE-2026-49278?

Rocket.Chat, a secure and customizable open-source communication platform, contains a vulnerability affecting its visitors.info endpoint. Prior to certain versions, the response returned an unnecessary token, which could compromise user security. This token's presence is unwarranted with no discernible use case, making its removal a vital enhancement for securing user data. The vulnerability has been addressed in versions 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 Version(s)

Rocket.Chat >= 8.5.0-rc.0, < 8.5.0 < 8.5.0-rc.0, 8.5.0

Rocket.Chat >= 8.4.0-rc.0, < 8.4.2 < 8.4.0-rc.0, 8.4.2

Rocket.Chat >= 8.3.0-rc.0, < 8.3.4 < 8.3.0-rc.0, 8.3.4

References

https://github.com/RocketChat/Rocket.Chat/security/adviso...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.