CVE-2026-9181 Directory Traversal in ArcGIS Server

Critical 9.8 Published 6 Jul 2026 Updated 8 Jul 2026

Unauthenticated attackers can overwrite sensitive files via crafted path parameters, leading to full administrative access on ArcGIS Server.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-9181?

CVE-2026-9181 is a critical path traversal vulnerability in Esri Arcgis Server, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Esri ArcGIS Server contains a directory traversal vulnerability. ArcGIS Enterprise on Kubernetes is not impacted. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow overwriting sensitive files on the system. Abuse of this issue can allow full administrative access to ArcGIS Server, with high impact to confidentiality, integrity, and availability. 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.

Weakness: CWE-22

Which versions are affected by CVE-2026-9181?

It affects 1 product.

Products include Esri Arcgis Server.

How do I fix CVE-2026-9181?

No fix has been published for CVE-2026-9181 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-9181 being exploited?

There is no known exploitation of CVE-2026-9181 in the wild and no public exploit code.

All Esri Arcgis Server vulnerabilities

Sources

Also known as GHSA-8h42-h5vq-h5gv.