CVE-2026-87796
Multi Uploader for Gravity Forms <= 1.1.9 - Unauthenticated Arbitrary File Upload via Chunked File Upload
CRITICAL 9.8EPSS 1.1%
The Multi Uploader for Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.1.9 via the move_file function. This is due to insufficient file type validation during chunked upload handling. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
- Affected
- sh1zen · Multi Uploader for Gravity Forms
- CVSS v3.1 WORDFENCE
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.14% chance of exploitation in the next 30 days, 66th percentile
- Published
- 2026-09-17
- Updated
- 2026-09-19
Proof-of-concept exploits (1)
- abraxas/CVE-2026-877961★ · 2026-10-07