CVE-2026-86197

5.1 Moyenne

Publiée le 05/09/2026 à 15:18 · Modifiée le 08/10/2026 à 18:17 · Analyse NVD reportée · Source : disclosure@vulncheck.com

Description

Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets without proper output escaping. Page editors can inject arbitrary script by registering malicious assets or injecting attributes, which are rendered unescaped into document head tags and executed for all visitors including administrators.

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Produits concernés

getgrav grav

Scores CVSS

Version	Score	Source	Vecteur
4.0	5.1 Moyenne	disclosure@vulncheck.com	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`

Faiblesses (CWE)

CWE-79

Références

https://github.com/getgrav/grav/security/advisories/GHSA-8hgv-xc77-jmcr
https://www.vulncheck.com/advisories/grav-before-2.0.20-cross-site-scripting-via-assets-sandbox

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories