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.
Metrics
Affected Vendors & Products
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References
History
Wed, 15 Jul 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Grav before 9.1.8 Arbitrary File Write via Twig-Processed Filename | |
| Weaknesses | CWE-73 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-15T11:47:05.028Z
Reserved: 2026-07-10T21:54:26.760Z
Link: CVE-2026-61873
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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