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CVE-2026-86193— Grav API Plugin Authentication Bypass via Group-Inherited Super

Quick assessment

Affected
getgrav grav-plugin-api
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.

Grav是Grav组织开源的一款基于文件的扁平化内容管理系统。 Grav 1.0.20之前版本存在授权问题漏洞，该漏洞源于未能验证用户管理守卫中组继承的超级权限，可能导致非超级用户管理员修改超级管理员账户，攻击者可利用api.access和api.users.write权限修改组超级账户的密码字段，从而获取完全管理控制权。

CVSS 8.7 · High EPSS 0.36% · P29

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav-plugin-api < 1.0.20 affected
1.0.20 unaffected
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I. Basic Information for CVE-2026-86193

Vulnerability Information
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Vulnerability Title
Grav API Plugin Authentication Bypass via Group-Inherited Super
Source: CVE Program / CVE List V5
Vulnerability Description
grav-plugin-api before 1.0.20 fails to validate group-inherited super permissions in user-management guards, allowing non-super user managers to modify super-admin accounts. Attackers with api.access and api.users.write can patch password fields on group-super accounts to gain full administrative control.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav是Grav组织开源的一款基于文件的扁平化内容管理系统。 Grav 1.0.20之前版本存在授权问题漏洞，该漏洞源于未能验证用户管理守卫中组继承的超级权限，可能导致非超级用户管理员修改超级管理员账户，攻击者可利用api.access和api.users.write权限修改组超级账户的密码字段，从而获取完全管理控制权。
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
getgrav grav-plugin-api 0 ~ 1.0.20 -

II. Public POCs for CVE-2026-86193

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III. Intelligence Information for CVE-2026-86193

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Vendor Advisories for CVE-2026-86193 (2)

Same Patch Batch · getgrav · 2026-09-05 · 5 CVEs total

CVE-2026-86196 8.7 HIGH Grav API Plugin before 1.0.20 Authentication Bypass via Host Header
CVE-2026-86195 8.7 HIGH grav-plugin-api 1.0.0 through 1.0.19 Privilege Escalation via Dot-Keyed Super Flag
CVE-2026-86194 6.9 MEDIUM Grav Form Plugin before 9.1.22 Cross-Page Form Execution
CVE-2026-86197 5.1 MEDIUM Grav before 2.0.20 Cross-Site Scripting via Assets Sandbox

IV. Related Vulnerabilities

Same product: grav-plugin-api
Same vendor: getgrav
Same weakness: CWE-863

V. Comments for CVE-2026-86193

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