CVE-2026-13019Network attack vector

Unauthenticated access to unprotected API

Published Jul 7, 2026 · Updated Jul 7, 2026

Missing authentication in Portal for ArcGIS 12.1 and earlier allows remote attackers to access an unprotected API without credentials. Esri has not disclosed the API endpoint or the authentication check omitted before the protected operation. No account or user action is required, but Esri has not disclosed what the API exposes or which operations it permits.

CVSS severity9.8
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Portal for ArcGIS 12.1 and earlier allows remote attackers to access an unprotected API without credentials. Esri has not disclosed the API endpoint or the authentication check omitted before the protected operation. No account or user action is required, but Esri has not disclosed what the API exposes or which operations it permits.

The record

CVE
CVE-2026-13019
Published
Jul 7, 2026
Updated
Jul 7, 2026
Vendor
Esri
Product
Portal for ArcGIS
Classifications
CWE-306, CWE-640, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <12.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Esri · Portal for ArcGISversion=0 <12.1

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-640Weak Password Recovery Mechanism for Forgotten Password
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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