BUG-000142180 Hosted feature services vulnerable to stored XSS
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
A stored Cross Site Scripting (XSS) vulnerability in Esri ArcGIS Server feature services versions 10.8.1 and 10.9 (only) feature services may allow a remote, unauthenticated attacker to pass and store malicious strings via crafted queries which when accessed could potentially execute arbitrary JavaScript code in the user’s browser.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Esri | ArcGIS Server | 10.8.1 to before 10.9.0 | 10.9.0 | Patch available | CNA |
- ArcGIS Server VendorEsri Affected 10.8.1 to before 10.9.0 Fixed in 10.9.0 Patch available CNA
Remediation
- Fix · CNA ArcGIS Server (Esri) Fixed in 10.9.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Esri ArcGIS Server 10.9.0
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2021-10000 SQL injection vulnerability in ArcGIS ServerPriority MEDIUM 50
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29116
- 2026-10-03 Alias added: GHSA-g47m-f7f9-9p9x
References
More Esri Arcgis Server vulnerabilities
- TI-2026-08070 Directory Traversal in ArcGIS Server CVSS 3.1CRITICAL 9.8
- TI-2025-35724 BUG-000179884 - There is a security vulnerability in ArcGIS Server Feature Services. CVSS 3.1CRITICAL 10.0
- TI-2021-10000 SQL injection vulnerability in ArcGIS Server CVSS 3.1CRITICAL 9.8
- TI-2021-09989 There is a Server-Side Request Forgery (SSRF) vulnerability in Esri ArcGIS Server Manager version 10.8.1 and below. CVSS 3.1CRITICAL 9.1
- TI-2026-08071 Unvalidated File Upload vulnerability in ArcGIS Server. CVSS 3.1CRITICAL 9.8
- TI-2020-18172 Esri ArcGIS Server before 10.8 is vulnerable to SSRF in some configurations. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-29116 · CVE Program
- CVE-2021-29116 · NVD
- FIRST EPSS
- GHSA-g47m-f7f9-9p9x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences