---
id: CVE-2026-85598
title: >-
  Grav versions 2.0.0 through 2.0.17 fail to apply save-time XSS detection to
  modular pages, allowing authenticated page editors to store Twig-assembled XSS
  payloads
summary: >-
  Grav versions 2.0.0 through 2.0.17 fail to apply save-time XSS detection to
  modular pages, allowing authenticated page editors to store Twig-assembled XSS
  payloads. Attackers with page-edit rights can create modular pages with
  malicious …
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: getgrav
product: grav
affected:
  - grav >= 2.0.0 <= 2.0.17
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:16:58.137'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85598'
references:
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-fg8g-663r-f366'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/grav-2.0.0-through-2.0.17-stored-xss-via-modular-pages
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00153
epssPercentile: 0.0486
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:19:23.236847Z'
ingestedAt: '2026-09-06T01:47:58.057Z'
---

## Overview

Grav versions 2.0.0 through 2.0.17 fail to apply save-time XSS detection to modular pages, allowing authenticated page editors to store Twig-assembled XSS payloads. Attackers with page-edit rights can create modular pages with malicious Twig code that executes in visitor browsers when the parent page is rendered, including in administrator sessions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.