Security incident · CVE-2025-55105
There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject mal
Published Aug 21, 2025 · catalog updated Aug 21, 2025 · Esri Portal for ArcGIS Enterprise Experience Sites
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-55105. EPSS is 0.22%. Act only if a listed version of Esri Portal for ArcGIS Enterprise Experience Sites is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium4.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.22%
- Remediation
- Vendor / distro source
- Affected products
- vendor Esri Portal for ArcGIS Enterprise Experience Sites 10.9.1 ≤11.4
There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject malicious a file with an embedded xss script which when loaded could potentially execute arbitrary JavaScript code in the victim’s browser. The privileges required to execute this attack are high. The attack could disclose a privileged token which may result in the attacker gaining full control of the Portal.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Esri Portal for ArcGIS Enterprise Experience Sites 10.9.1 ≤11.410.9.1 ≤11.4
How to fix CVE-2025-55105
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 10.9.1 ≤11.4
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-55105. EPSS is 0.22%. Act only if a listed version of Esri Portal for ArcGIS Enterprise Experience Sites is installed.
Which versions are affected?
Compare what you have installed with Esri Portal for ArcGIS Enterprise Experience Sites 10.9.1 ≤11.4 10.9.1 ≤11.4. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 21, 2025 · EUVD
Detected
There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject malicious a file with an embedded xss script which when loaded could potentially execute arbitrary JavaScript code in the victim’s browser. The privileges required to execute this attack are high. The attack could disclose
Aug 21, 2025 · EUVD
Updated
There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject malicious a file with an embedded xss script which when loaded could potentially execute arbitrary JavaScript code in the victim’s browser. The privileges required to execute this attack are high. The attack could disclose
Sources
- CVE.orgVulnerability recordCVE-2025-55105
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-55105
30-day exploitation probability 0.22%
first.org - EUVDVulnerability recordEUVD-2025-28579
There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject malicious a file with an embedded xss script which when loaded could potentially execute arbitrary Java
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 23, 2026
- CVE.orgOct 22, 2026
- EUVDOct 22, 2026