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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.

PUBLISHED Reserved 2026-05-28 | Published 2026-06-24 | Updated 2026-06-26 | Assigner GitHub_M




MEDIUM: 6.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

Problem types

CWE-285: Improper Authorization

Product status

>= 8.5.0-rc.0, < 8.5.0
affected

>= 8.4.0-rc.0, < 8.4.2
affected

>= 8.3.0-rc.0, < 8.3.4
affected

>= 8.2.0-rc.0, < 8.2.4
affected

>= 8.1.0-rc.0, < 8.1.5
affected

>= 8.0.0-rc.0, < 8.0.6
affected

>= 7.11.0-rc.0, < 7.13.8
affected

< 7.10.12
affected

References

github.com/...t.Chat/security/advisories/GHSA-cqj7-h8cj-jmf2 exploit

github.com/...t.Chat/security/advisories/GHSA-cqj7-h8cj-jmf2

cve.org (CVE-2026-49278)

nvd.nist.gov (CVE-2026-49278)

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