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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是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.10.11之前版本存在授权问题漏洞，该漏洞源于GraphQL条目变更解析器未通过ArgumentManager::prepareArguments()验证siteId，导致站点范围绕过，攻击者使用一个站点的令牌并直接在变更参数中传递siteId，可读取、修改或删除未授权站点的条目。

CVSS 8.8 · High EPSS 0.47% · P40

Affected Version Matrix 2

VendorProduct Version RangeStatus
craftcms cms 5.0.0-RC1< 5.10.11 affected
5.10.11 unaffected
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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
Vulnerability Title
Craft CMS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 5.10.11之前版本存在授权问题漏洞，该漏洞源于GraphQL条目变更解析器未通过ArgumentManager::prepareArguments()验证siteId，导致站点范围绕过，攻击者使用一个站点的令牌并直接在变更参数中传递siteId，可读取、修改或删除未授权站点的条目。
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
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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Vendor Advisories for CVE-2026-84796 (2)

Same Patch Batch · craftcms · 2026-09-02 · 14 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-2026-79989 8.7 HIGH Arbitrary user password reset leading to administrator account takeover
CVE-2026-79990 8.7 HIGH GQL entry mutation `siteId` bypasses schema site scope, enabling cross-site content read/w
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-2026-79991 7.1 HIGH Authenticated SQL Injection via nested eager-loading criteria
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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