CVE-2026-69229: There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that allows a remot

Q: How do I fix CVE-2026-69229?

portal for arcgis: upgrade to 11.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-69229 being exploited?

CVE-2026-69229 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-2026-69229 affect?

CVE-2026-69229 affects portal for arcgis. Severity is medium (CVSS 5.4). There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that allows a remote, authenticated attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterpri

Q: How urgent is CVE-2026-69229?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-69229 is a medium-severity flaw (CVSS 5.4) affecting portal for arcgis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that allows a remote, authenticated attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterprise 11.1, 11.3, 11.5 and 12.0 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-08-21
Last modified	2026-10-12

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

Last updated 2026-10-12 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-21 21:17 UTCPublished CVE record published
2026-10-12 16:10 UTCUpdated Record last modified

esri portal for arcgis UPGRADE

Affected: < 11.1 · 11.1 · 11.1 security_2024_update1 · 11.1 security_2024_update2 · 11.1 security_2025_update1 · 11.1 security_2025_update2 · 11.1 security_2025_update3 · 11.1 security_2026_update2

Fixed in: 11.1

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 11.1 (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-2026-69229?

portal for arcgis: upgrade to 11.1. Exact commands for each OS are on this page.

Is CVE-2026-69229 being exploited?

CVE-2026-69229 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-2026-69229 affect?

CVE-2026-69229 affects portal for arcgis. Severity is medium (CVSS 5.4). There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that allows a remote, authenticated attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterpri

How urgent is CVE-2026-69229?

Priority 24/100. No elevated risk signals yet.

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References

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