5.4

CVE-2026-69229: HTML injection vulnerability in Esri Portal for ArcGIS

Analyzed
Published 21-08-2026Last modified 24-08-2026

Vulnerability summary

CVE-2026-69229 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in esri portal_for_arcgis. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 19.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.27%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 21-08-2026
    PublishedVulnerability first disclosed.
  2. 24-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.27% on 26-09-2026

26-09-202626-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Esri1 product
  • portal_for_arcgis≥ 11.1, ≤ 12.0 | < 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 | 11.2 | 11.3 | 11.3:security_2025_update1 | 11.3:security_2025_update2 | 11.3:security_2025_update3 | 11.3:security_2026_update2 | 11.4 | 11.5 | 11.5:security_2026_update1 | 11.5:security_2026_update2 | 12.0 | 12.0:security_2026_update1 | 12.0:security_2026_update2

1 vendor · 1 product

References

1 links