CVE-2026-9182CWE-434

Unvalidated File Upload vulnerability in ArcGIS Server.

Critical · published July 6, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.7
In the wild
Unconfirmed
What it is

Esri ArcGIS Server contains an unrestricted file upload vulnerability. An unauthenticated attacker could exploit this issue by uploading a crafted file to the affected endpoint. Successful exploitation could allow arbitrary file upload, potentially allowing for other attacks. This issue impacts all versions of ArcGIS Server on Windows and Linux 12.0 and prior. This issue does not impact ArcGIS Enterprise for Kubernetes.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00619 · 48.7th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-07-06T18:21Z
EPSS history
Timeline
  • 06 JUL 18:21Z
    Unvalidated File Upload vulnerability in ArcGIS Server.
    cvelistv5