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CVE-2026-58066

Quick assessment

Affected
Rocket.Chat Rocket.Chat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rocket.Chat是Rocket.Chat公司开源的一个聊天软件。 Rocket.Chat 8.7.0之前版本、8.6.1之前版本、8.5.2之前版本、8.4.5之前版本、8.3.7之前版本、8.2.7之前版本、8.1.7之前版本、8.0.8之前版本和7.10.14之前版本存在授权问题漏洞，该漏洞源于SAML SSO验证XML签名但未将验证签名绑定到samlp:Response/saml:Assertion，可能导致攻击者利用可信IdP证书的有效签名提交伪造身份属性的包装文档，从而以任意用户身份登录。

AI Predicted 9.1 Difficulty: Easy EPSS 0.38% · P30

Affected Version Matrix 9

VendorProduct Version RangeStatus
Rocket.Chat Rocket.Chat < 8.7.0 affected
< 8.6.1 affected
< 8.5.2 affected
< 8.4.5 affected
< 8.3.7 affected
< 8.2.7 affected
< 8.1.7 affected
< 8.0.8 affected
… +1 more rows
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I. Basic Information for CVE-2026-58066

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Rocket.Chat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rocket.Chat是Rocket.Chat公司开源的一个聊天软件。 Rocket.Chat 8.7.0之前版本、8.6.1之前版本、8.5.2之前版本、8.4.5之前版本、8.3.7之前版本、8.2.7之前版本、8.1.7之前版本、8.0.8之前版本和7.10.14之前版本存在授权问题漏洞，该漏洞源于SAML SSO验证XML签名但未将验证签名绑定到samlp:Response/saml:Assertion，可能导致攻击者利用可信IdP证书的有效签名提交伪造身份属性的包装文档，从而以任意用户身份登录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rocket.Chat Rocket.Chat 0 ~ 8.7.0 -

II. Public POCs for CVE-2026-58066

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III. Intelligence Information for CVE-2026-58066

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Patches & Fixes for CVE-2026-58066 (1)

Other References for CVE-2026-58066 (1)

IV. Related Vulnerabilities

Same product: Rocket.Chat
Same vendor: Rocket.Chat
Same weakness: CWE-287

V. Comments for CVE-2026-58066

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