CVE-2026-58066

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

30 Jul 2026, 06:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-30 06:25

Updated : 2026-07-31 04:17

NVD link : CVE-2026-58066

Mitre link : CVE-2026-58066

CVE.ORG link : CVE-2026-58066

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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