What is CVE-2026-45688?

CVE-2026-45688 is a critical-severity vulnerability in Rocketchat Rocket.chat, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 9.1/10. Published 2026-06-24.

How severe is CVE-2026-45688?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Rocketchat Rocket.chat

CVE-2026-45688

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's CAS login handler forwards the client-supplied options.cas.credentialT…

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Rocketchat Rocket.chat — versions >= 8.5.0-rc.0, < 8.5.0, >= 8.4.0-rc.0, < 8.4.1, >= 8.3.0-rc.0, < 8.3.3

Weakness classification (CWE)

CWE-943 — Improper Neutralization of Special Elements in Data Query Logic

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-45688?: CVE-2026-45688 is a critical-severity vulnerability in Rocketchat Rocket.chat, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 9.1/10. Published 2026-06-24.
How severe is CVE-2026-45688?: Critical severity. CVSS v3 base score is 9.1 out of 10.