High-severity authentication bypass in widely used enterprise GIS (Esri Portal for ArcGIS) allowing unauthenticated access to critical APIs and data across organizations.
CVE-2026-13019
Unauthenticated access to Esri Portal API allows critical function access.
Is CVE-2026-13019 being exploited?
Not confirmed. CVE-2026-13019 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-13019?
CVE-2026-13019 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-13019?
Yes. A fix has been recorded for CVE-2026-13019. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13019 affect?
CVE-2026-13019 affects Esri Portal for ArcGIS <= 12.1 (Windows), Esri Portal for ArcGIS <= 12.1 (Linux), Esri Portal for ArcGIS <= 12.1 (Kubernetes). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-13019?
Isolate Portal, restrict API access, apply vendor patch when released, enforce network auth and logging
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated attacker can access unprotected Portal APIs to perform admin actions, exfiltrate data, or manipulate maps/services.
Immediate action required
- affected< 12.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.