CVE-2026-85598

Medium

Description

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.

SeverityMedium

CVSS6.4

Exploit probability—

Product

Grav

PublishedSep 4, 2026

First seenSep 4, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Vendor advisories

github.com/getgrav/grav/security/advisories/GHSA-fg8g-663r-f366

Affected products

Product	Affected versions	Fixed in
getgrav grav	2.0.0 ≤ v ≤ 2.0.17	—

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