How severe is CVE-2026-69234?

CVE-2026-69234 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-69234 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-69234?

CVE-2026-69234 primarily affects Esri Portal For Arcgis. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-69234?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-69234 published?

CVE-2026-69234 was published on 2026-08-21 and last updated on 2026-09-11.

CVE-2026-69234

CVE-2026-69234 is a medium-severity vulnerability in Esri Portal For Arcgis with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Esri Portal For Arcgis
Published: 2026-08-21
Last modified: 2026-09-11

Description

There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 11.5 and prior which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release. Users working with ArcGIS Web App Builder developer edition are advised to migrate to ArcGIS Experience Builder, as ArcGIS Web App Builder developer edition is unsupported when this CVE is assigned.

Frequently asked questions

What is CVE-2026-69234?: There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 11.5 and prior which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release. Users working with ArcGIS Web App Builder developer edition are advised to migrate to ArcGIS Experience Builder, as ArcGIS Web App Builder developer edition is unsupported when this CVE is assigned.
How severe is CVE-2026-69234?: CVE-2026-69234 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-69234 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-69234?: CVE-2026-69234 primarily affects Esri Portal For Arcgis. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-69234?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-69234 published?: CVE-2026-69234 was published on 2026-08-21 and last updated on 2026-09-11.

References

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/august-2026-arcgis-security-bulletin

Affected products (18)

cpe:2.3:a:esri:portal_for_arcgis:*:*:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:-:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2024_update1:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2024_update2:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update1:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update2:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update3:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2026_update2:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.2:*:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.3:-:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update1:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update2:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update3:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2026_update2:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.4:*:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.5:-:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.5:security_2026_update1:*:*:*:*:*:*
cpe:2.3:a:esri:portal_for_arcgis:11.5:security_2026_update2:*:*:*:*:*:*

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