CVE-2026-61873 | BDVDB-2026-348778 Detail

Description#

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.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12026-07-15Record published in the CVE List.
2. Version 22026-07-28Most recent update recorded in the CVE List.