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

Q: How do I fix CVE-2026-13019?

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

Q: Is CVE-2026-13019 being exploited?

CVE-2026-13019 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-2026-13019 affect?

CVE-2026-13019 affects portal for arcgis. Severity is critical (CVSS 9.8). Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes have a missing authentication for critical function vulnerability allows a remote, unauthenticated attacker to access an unprotected API. The following versio

Q: How urgent is CVE-2026-13019?

Priority 62/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2026-13019 is a critical-severity flaw (CVSS 9.8) affecting portal for arcgis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes have a missing authentication for critical function vulnerability allows a remote, unauthenticated attacker to access an unprotected API. The following versions are known to be affected: Portal for ArcGIS 12.1 and earlier. Other unsupported versions may also be affected. Esri recommends that users apply the Portal for ArcGIS Security 2026 Update 2 Patch to remediate

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
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.

Exact fixes by distribution

Fedora 46 · python-apprise · FIXED · 2.1.0-1.fc46 · FEDORA-2026-ef67a72c5d · source

sudo dnf upgrade --advisory=FEDORA-2026-ef67a72c5d

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-2026-13019?

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

Is CVE-2026-13019 being exploited?

CVE-2026-13019 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-2026-13019 affect?

CVE-2026-13019 affects portal for arcgis. Severity is critical (CVSS 9.8). Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes have a missing authentication for critical function vulnerability allows a remote, unauthenticated attacker to access an unprotected API. The following versio

How urgent is CVE-2026-13019?

Priority 62/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Kubernetes vulnerabilities · Windows vulnerabilities

Related CVEs

CVE-2026-13020 HIGH 8.1 UPGRADE A Weak Password Recovery Mechanism for Forgotten Password exists in Esri Portal for ArcGIS versions 12.1 and e

References

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