Is CVE-2026-50095 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-50095 being exploited in the wild.

How severe is CVE-2026-50095?

Medium severity, with a CVSS score of 6.1, published 26 October 2026.

Which products and versions are affected?

Esri ArcGIS Server 11.1 and earlier.

Is there a fix for CVE-2026-50095?

Yes: fixed in 12.1, 12.0, 11.5, 11.3, and 11.1 (patched versions). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-50095 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-50095?

Check whether you run Esri ArcGIS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-50095: Esri ArcGIS Server stored XSS in file uploads

CVE-2026-50095 · Severity: medium · CVSS 6.1 · Published 2026-10-26

Esri ArcGIS Server, a mapping and geospatial data platform used by organizations to manage and share location-based information, contains a stored cross-site scripting vulnerability. An unauthenticated attacker can upload malicious files that execute in the browsers of victims who access them, potentially leading to session hijacking, credential theft, or malware delivery.

Technologies: Esri ArcGIS Server. Vendors: Esri.

Quick answers

Is CVE-2026-50095 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-50095 being exploited in the wild.
How severe is CVE-2026-50095?: Medium severity, with a CVSS score of 6.1, published 26 October 2026.
Which products and versions are affected?: Esri ArcGIS Server 11.1 and earlier.
Is there a fix for CVE-2026-50095?: Yes: fixed in 12.1, 12.0, 11.5, 11.3, and 11.1 (patched versions). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-50095 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-50095?: Check whether you run Esri ArcGIS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 12.1, 12.0, 11.5, 11.3, and 11.1 (patched versions)

Technical details

A stored XSS vulnerability exists in ArcGIS Server 11.1 and earlier that allows remote unauthenticated attackers to upload files containing malicious JavaScript code. When victims access these stored files through their browsers, the malicious code executes within the security context of the ArcGIS Server domain. The vulnerability requires specific server configurations to be exploited.

Affected products

Esri ArcGIS Server 11.1 and earlier

Timeline

2026-10-26: disclosed

References

https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/october-2026-arcgis-security-bulletin

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