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CVE-2021-3818— Reliance on Cookies without Validation and Integrity Checking in getgrav/grav

Quick assessment

Affected
getgrav getgrav/grav
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是一套可扩展的用于个人博客、小型内容发布平台和单页产品展示的CMS（内容管理系统）。 grav 中存在访问控制错误漏洞，该漏洞源于产品未对cookie缺少有效验证以及完整性检查。以下产品及版本受到影响：Getgrav grav 1.7.21版本及之前版本。

AI Predicted 4.3 Difficulty: Easy EPSS 2.45% · P84

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force
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I. Basic Information for CVE-2021-3818

Vulnerability Information
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Vulnerability Title
Reliance on Cookies without Validation and Integrity Checking in getgrav/grav
Source: CVE Program / CVE List V5
Vulnerability Description
grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav是一套可扩展的用于个人博客、小型内容发布平台和单页产品展示的CMS（内容管理系统）。 grav 中存在访问控制错误漏洞，该漏洞源于产品未对cookie缺少有效验证以及完整性检查。以下产品及版本受到影响：Getgrav grav 1.7.21版本及之前版本。
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 getgrav/grav unspecified ~ 1.7.22 -

II. Public POCs for CVE-2021-3818

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-3818

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Patches & Fixes for CVE-2021-3818 (1)

Vendor Advisories for CVE-2021-3818 (1)

IV. Related Vulnerabilities

Same product: getgrav/grav
Same vendor: getgrav
Same weakness: CWE-565

V. Comments for CVE-2021-3818

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