CVE-2026-61873

Publié : 15 juillet 2026

Modifié : 15 juillet 2026

Score CVSS

8.1

HIGH

Description détaillée

Grav before 9.1.8 contains an arbitrary file write vulnerability in the Form plugin's process.save.filename parameter, which is validated against path traversal before Twig processing but never re-validated after rendering. Attackers can submit form data containing path traversal sequences that are processed through Twig templates, allowing them to write arbitrary files including PHP webshells to the web root or other sensitive directories.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Références et Patchs

https://github.com/getgrav/grav/security/advisories/GHSA-q532-mvx7-42qg https://www.vulncheck.com/advisories/grav-before-arbitrary-file-write-via-twig-processed-filename

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