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CVE-2026-85599— Grav Shortcode Core before 6.2.5 Stored XSS via unescaped parameters

Quick assessment

Affected
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 Shortcode Core 在 6.2.5 版本之前存在存储型跨站脚本（XSS）漏洞，涉及 标签的参数以及 标签的 summary 参数。这些参数内容在渲染到页面时未进行转义处理。拥有页面编辑权限的攻击者可以注入任意 HTML 和 JavaScript 代码，这些代码将在所有页面访问者（包括管理员）的浏览器中执行。

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav < 6.2.5 affected
6.2.5 unaffected
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I. Basic Information for CVE-2026-85599

Vulnerability Information
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Vulnerability Title
Grav Shortcode Core before 6.2.5 Stored XSS via unescaped parameters
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Shortcode Core before 6.2.5 contains stored cross-site scripting vulnerabilities in the [lorem] tag parameter and [details] summary parameter that are written to rendered pages without escaping. Attackers with page-edit access can inject arbitrary HTML and JavaScript that executes in the browsers of all page visitors, including administrators.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav 0 ~ 6.2.5 -

II. Public POCs for CVE-2026-85599

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III. Intelligence Information for CVE-2026-85599

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Vendor Advisories for CVE-2026-85599 (2)

Same Patch Batch · getgrav · 2026-09-04 · 7 CVEs total

CVE-2026-85604 8.8 HIGH Grav before 2.0.19 Remote Code Execution via sort filter
CVE-2026-85603 6.5 MEDIUM Grav Admin Plugin Path Traversal via Save As Language Code
CVE-2026-85598 6.4 MEDIUM Grav 2.0.0 through 2.0.17 Stored XSS via Modular Pages
CVE-2026-85600 5.4 MEDIUM Grav Admin before 2.0.21 Stored XSS via username
CVE-2026-85601 5.4 MEDIUM Grav Admin before 2.0.20 Cross-Site Scripting via marked.js
CVE-2026-85602 5.3 MEDIUM Grav Form Plugin before 9.1.20 reCAPTCHA v3 Authentication Bypass

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-79

V. Comments for CVE-2026-85599

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