Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck
CVE-2026-85598Grav 2.0.0 through 2.0.17 Stored XSS via Modular Pages
Medium 6.4
In plain English
A medium-severity cross-site scripting in grav from getgrav. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 3.1)6.4Medium
Exploit odds (30 days)0.3%top 82.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-fg8g-663r-f366) vendor-advisory
- VulnCheck Advisory: Grav 2.0.0 through 2.0.17 Stored XSS via Modular Pages third-party-advisory