CVE-2026-58066

CRITICAL SEVERITY

CVSS Score & Metrics

Base Score

9.8 / 10

Vector String

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

Vulnerability Description

Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.

Vulnerability Details

Published Date

July 30, 2026

Last Modified

July 30, 2026

CWE ID

CWE-287

Source

NVD

Vendor

Rocket.Chat

Product

Rocket.Chat

External References

https://github.com/RocketChat/Rocket.Chat/pull/41233
https://hackerone.com/reports/3827674

CVE-2026-58066

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment