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High severity · published Mar 26, 2026
CVE-2026-28298
SolarWinds Observability Self-Hosted Stored Cross-Site Scripting Vulnerability
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
SolarWinds Observability Self-Hosted was found to be affected by a stored cross-site scripting vulnerability, which when exploited, can lead to unintended script execution.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SO
SolarWinds Observability Self-Hosted · SolarWinds
2026.1.1 and previous versions · source: vendor
OS
Observability Self-hosted · Solarwinds
before 2026.1.1 · source: NVD
Affected product
SO
SolarWinds Observability Self-Hosted
SolarWinds
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28298
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28298
Release Notes
https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/hco_2026-1-1_release_notes.htm
Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28298
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