CVE-2026-13020: A Weak Password Recovery Mechanism for Forgotten Password exists in Esri Portal for ArcGIS versions 12.1 and e

Q: How do I fix CVE-2026-13020?

portal for arcgis: upgrade to newer than 12.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-13020 being exploited?

CVE-2026-13020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-13020 affect?

CVE-2026-13020 affects portal for arcgis. Severity is high (CVSS 8.1). A Weak Password Recovery Mechanism for Forgotten Password exists in Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes. A remote, unauthorized attacker may assume ownership of a user’s account by manipulating

Q: How urgent is CVE-2026-13020?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.1REMOTEUPGRADE

CVE-2026-13020 is a high-severity flaw (CVSS 8.1) affecting portal for arcgis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Weak Password Recovery Mechanism for Forgotten Password exists in Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes. A remote, unauthorized attacker may assume ownership of a user’s account by manipulating this mechanism. ArcGIS Administrators should configure an email server with ArcGIS Enterprise to facilitate user self-service password recovery. The ability for an administrator to reset a user’s password remai

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-640
Published	2026-07-07
Last modified	2026-10-25

Publisher (CNA): Environmental Systems Research Institute, Inc. · Vendor: esri

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-07 17:16 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

esri portal for arcgis UPGRADE

Affected: <= 12.1

Fixed in: newer than 12.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy portal-for-arcgis || rpm -q portal-for-arcgis || portal-for-arcgis --version

2. UPGRADE to newer than 12.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade portal-for-arcgis

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade portal-for-arcgis

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-13020?

portal for arcgis: upgrade to newer than 12.1. Exact commands for each OS are on this page.

Is CVE-2026-13020 being exploited?

CVE-2026-13020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-13020 affect?

CVE-2026-13020 affects portal for arcgis. Severity is high (CVSS 8.1). A Weak Password Recovery Mechanism for Forgotten Password exists in Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes. A remote, unauthorized attacker may assume ownership of a user’s account by manipulating

How urgent is CVE-2026-13020?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

Software pages

Kubernetes vulnerabilities · Windows vulnerabilities

Related CVEs

CVE-2026-13019 CRITICAL 9.8 UPGRADE Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes have a missing authenticatio

References

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