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CVE-2026-84796— Craft CMS 5.0.0-RC1 before 5.10.11 GraphQL Entry Mutation Site Scope Bypass

Quick assessment

Affected
craftcms cms
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.

Craft CMS 5.10.11 之前的版本存在一个站点作用域绕过（site scope bypass）漏洞，位于 GraphQL 入口（entry）的 mutation 解析器中。这些解析器未通过 对 进行验证。 攻击者若持有仅限于单个站点的令牌（token），可以通过在 mutation 参数中直接传递 ，从而对未授权的其他站点中的条目执行读取、修改或删除操作。

CVSS 8.8 · High
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I. Basic Information for CVE-2026-84796

Vulnerability Information
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Vulnerability Title
Craft CMS 5.0.0-RC1 before 5.10.11 GraphQL Entry Mutation Site Scope Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Craft CMS versions before 5.10.11 contain a site scope bypass vulnerability in GraphQL entry mutation resolvers that fail to validate siteId through ArgumentManager::prepareArguments(). Attackers with tokens scoped to one site can read, modify, or delete entries across unauthorized sites by passing siteId directly in mutation arguments.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
craftcms cms 5.0.0-RC1 ~ 5.10.11 -

II. Public POCs for CVE-2026-84796

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III. Intelligence Information for CVE-2026-84796

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Other References for CVE-2026-84796 (2)

Same Patch Batch · craftcms · 2026-09-02 · 11 CVEs total

CVE-2026-84795 9.8 CRITICAL Craft CMS before 5.10.11 Authentication Bypass via Admin Flag Inheritance
CVE-2026-84801 8.8 HIGH Craft CMS 5.0.0-RC1 before 5.10.11 Authentication Bypass via administrateUsers
CVE-2026-84794 7.1 HIGH Craft CMS 5.0.0 through 5.10.10 Authorization Bypass via assets/move-asset
CVE-2026-84800 7.1 HIGH Craft CMS 5.0.0-RC1 before 5.10.11 File Overwrite via assets/replace-file
CVE-2026-84798 7.1 HIGH Craft CMS before 5.10.11 Authorization Bypass via actionDeleteForSite
CVE-2026-84797 6.3 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.11 Authorization Bypass via actionDuplicate
CVE-2026-84793 4.8 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.11 Stored XSS via site name
CVE-2026-84792 4.3 MEDIUM Craft CMS before 5.10.11 Broken Access Control via element-indexes
CVE-2026-84802 4.3 MEDIUM Craft CMS 5.7.0 before 5.10.12 Information Disclosure via AssetsController
CVE-2026-84799 4.3 MEDIUM Craft CMS before 5.11.0 PII Disclosure via GraphQL User Relations

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-639

V. Comments for CVE-2026-84796

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