Quick answers
- Is CVE-2026-13020 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-13020 being exploited in the wild.
- How severe is CVE-2026-13020?
- High severity, with a CVSS score of 8.1, published 7 July 2026.
- Which products and versions are affected?
- Esri Portal For Arcgis <= 12.1.
- Is there a fix for CVE-2026-13020?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-13020 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-13020?
- Check whether you run Esri Portal For Arcgis 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.
Technical details
A vulnerability classified as CWE-640 (Weak Password Recovery Mechanism) exists in Esri Portal for ArcGIS. The flaw allows a remote, unauthenticated attacker to manipulate the 'forgot password' workflow to reset and take over accounts. While the attack complexity is rated as high, a successful exploit results in a complete loss of confidentiality, integrity, and availability for the affected user account. The vulnerability affects versions 12.1 and earlier across Windows, Linux, and Kubernetes deployments. Administrators are advised to configure a formal email server within ArcGIS Enterprise to facilitate secure self-service password recovery.
Affected products
- Esri Portal for ArcGIS <= 12.1
Timeline
- 2026-07-07: disclosed
- 2026-07-07: advisory