CVE-2026-85097 (GCVE-0-2026-85097)

Vulnerability from cvelistv5 – Published: 2026-10-08 06:42 – Updated: 2026-10-08 14:24
VLAI Previdian
Title
Bricksforge <= 3.1.8.9 - Unauthenticated Arbitrary File Upload via 'temporaryFileUploads' Parameter
Summary
The Bricksforge plugin for WordPress is vulnerable to unauthenticated arbitrary file upload in versions up to, and including, 3.1.8.9. This is due to insufficient validation of the attacker-controlled URL field in the 'temporaryFileUploads' parameter during form submission. An unauthenticated attacker can first obtain a valid nonce via the bricksforge_regenerate_nonce AJAX endpoint, then upload a GIF/PHP polyglot file to the temporary upload directory where MIME type validation is correctly performed. Subsequently, the attacker can submit a form with a crafted 'temporaryFileUploads' parameter where the server-side file path points to the validated GIF file, but the attacker-controlled url field ends with a .php extension. This makes it possible for unauthenticated attackers to upload and execute arbitrary PHP code on the server.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 14:24 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2195 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Bricksforge Bricksforge Affected: 0 , ≤ 3.1.8.9 (semver)
guessed Create a notification for this product.
Credits
d.v4n_s3c
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: db94a2e5-f7a7-404f-a284-db35f10f33e1

Vulnerability ID: CVE-2026-85097

Status: Confirmed

Status Updated: 2026-10-12 09:42 UTC

Exploited: Yes

Timestamps
First Seen: 2026-10-12
Asserted: 2026-10-12
Scope
Notes: Bricksforge <= 3.1.8.9 - Unauthenticated Arbitrary File Upload via 'temporaryFileUploads' Parameter | Affected: Bricksforge / Bricksforge | CVSS: 9.8 (CRITICAL) | EPSS: 0.00312 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Bricksforge <= 3.1.8.9 - Unauthenticated Arbitrary File Upload via 'temporaryFileUploads' Parameter
Cve Id CVE-2026-85097
Vendor Bricksforge
Ghsa Id None
Product Bricksforge
Added Date 2026-10-12T09:42:09.886Z
Cvss Score 9.8
Epss Score 0.00312
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.22211
Used In Malware unknown
Vulnerability Id CVE-2026-85097
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-13 10:00 UTC | Updated: 2026-10-13 10:00 UTC
Show details on NVD website
To clipboard 

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