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CVE-2026-87796

Multi Uploader for Gravity Forms <= 1.1.9 - Unauthenticated Arbitrary File Upload via Chunked File Upload

CVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-87796

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

Exploitation and risk

Source status

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cve-program · CVE-2026-87796

Published

Multi Uploader for Gravity Forms <= 1.1.9 - Unauthenticated Arbitrary File Upload via Chunked File Upload

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.

Source published
17 Sep 2026 04:28:15 UTC
Source modified
19 Sep 2026 02:13:20 UTC
Saved here
23 Oct 2026 15:48:27 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

ChangeIntel

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Sources read 13 Nov 03:01 UTC · 274 of 275 readable · 272 fully read · documentation 461/469 current

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