CVE-2026-13020 Esri CVE debrief

Who should care

ArcGIS Administrators and users of Esri Portal for ArcGIS versions 12.1 and earlier should be aware of this vulnerability and take necessary actions to mitigate it. Affected operators should review the Esri security bulletin for June 2026 and configure an email server with ArcGIS Enterprise to facilitate user self-service password recovery. Security teams should prioritize patching or mitigation efforts based on the high severity of this vulnerability.

Technical summary

The vulnerability exists due to a weak password recovery mechanism for forgotten passwords in Esri Portal for ArcGIS. An attacker can manipulate this mechanism to assume ownership of a user’s account. The CVSS score for this vulnerability is 8.1, indicating a high severity. There is no information available about the existence of exploits or attacks in the wild. The Esri security bulletin for June 2026 provides additional technical context.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, as it allows for unauthorized account takeover.

Recommended defensive actions

• Configure an email server with ArcGIS Enterprise to facilitate user self-service password recovery.
• ArcGIS Administrators should reset user passwords as needed.
• Verify and update ArcGIS Portal for ArcGIS to a version that is not vulnerable.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-07-07T17:16:35.510Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The Esri security bulletin for June 2026 provides additional context.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.